Lewis Machine Gun

IS

HINE GUN HAND-BOOK

HAND-BOOK of the

LEWIS MACHINE

GUN

MODEL 1918 CALIBER .30

SAVAGE ARMS CORPORATION UTICA, NEW YOKK, U. S. A.

of CONTENTS

TABLE

PACE

(;eneral

Desrriptlon

7

Weights

and

Measurements

9

and Stripping

11

IIismounting Assembling

.

24

Operation

27

” Safety ”

39

Care

and Adjustmen:

41

to Armorers

45

Notice Cleaning

and Oiling

51

. 54-57

Stoppagos Sequence

of Immediate

Immediate

Action

Component

Parts

Action

in Replacing and

Reference

58 Parts Numbers

00 52

LIST

PLATE

Ready I-Gun

ILLUSTRATIONS

of

Complete

with

.

Mount

II-Gun

.

Complete Right

1 II-Gun

Parts Trigger

.

\‘lII-Loading IX-Back

Tool Sight

XII-View

Piston

with

. and

Rack

.

.

. Bolt

Spade

.

.

.

and

20 and

.

22 . .

34

in Position

.

36 46

. Magazine

Showing

Proper

zine on Magazine

. Containers

Method Post

18

Ex-

.

Box and

.

.

Grip

.

16

and

. .

.

.

View

Sottom

Magazine

.

and

Mainspring

.

Handle,

View

and 12

.

.

X-Accessories Xl-Gun

and

.

ti

.

Mechanism,

Loading

VII-hlagazine-Top

.

View

.

Mount

Field

.

.

.

Stock, Bipod

.

Group,

Feed

Bipod

Mount-Top

.

: Receiver

.

and

.

with

P*cE

. Frontispiece

,

Magazine

Mechanism

Parts: tractors

VI-Butt

.

: Barrel Group . . . . .

Parts

V-Gun

.

.

Side View

Group IV-Gun

.

for Action

. .

of Placing

.

.

.

48 .

50

Maga52

GENERAL

vf

ODERN

machine

mea‘n.s,

The

I

Las-operated l’he are let

and

the center the sptrallv

helical

groo\.c

during arranged

gas

the

groove

in which

and

by

center

until

operating

they

they

are suc-

mechanism

through under

This and,

po.ver

gun, thus down the

in the barrel

gas is taken

of the action

are

are rotated

arm. of the

rearward.

The the bul-

which

magazine

into a cylinder

motive

the cartridges

the center.

produced

This

a piston

stroke

stores

means.

magazine-fed,

in which

the operation

pressure

of the barrel

the opening

is

toward

of the

magaztne

for

cartridge.

it drives

by feeding

cooling

the operation of the column of cartridges

by the feed

power

the muzzle

sprtng,

engage parts

of rhe

from

exploding which

cartridges

reached

Lloti\c

ends spiral

other

around driving

drum

bullet

has a deep

‘l‘he

obtained

and

Gun

IS a tit-cular

of the

ressi\,ely

Machine

radially,

center

enda

are classified

means

air-cooled.

magal.ine

controlled.

guns

operating

Lewis

arranged

magazine

DESCRIPTION

a hole near the barrel,

directly

by winding

to be used

is

by the in

produces the main-

in the

closing

stroke. Air barrel

is used with

as a cooling

a radiator

and so presenting ation,

(bj

of high tng

columns

the muzzle

high

to it the largest

by using

thermal

agent

having

as radiator

conductivity, of air along

blast of firing

(a> by surrounding

the

longitudinal

tins

possible

material and

these

(c)

surface

for radi-

aluminum,

a metal

by mechanically

radiating

as a suction

radial

surfaces

pump.

suckby using

WEIGHTS The Gun

\\-eights

rz/zd MEASURE~A’IENTS and

are as f”ll”\r-s

measurements

of the Le\vis

Weight

of gun

\?;elght

of gun

Weight

of magazine

(empty)

Weight

of magazine

(filled.)

\vith

hipod

.

26 lb?;. t; oz.

mount

2s Ihc. 4 oz. .

.

mount

of gun

v-ith

rifle butt

Length

of gun

\vith

spade

Length

of barrel

.

sights

up to 2100

Trigger pull . IIiameter of bore

.

K’fl’ I ing, number

of gro”\es

Ta-ist

turn

.

.

44”

.

velocity. pressure

32.174”

yds.

.

.

.

12 t” 14 lhs.

.

0.30”

. 4

in trn inches

.

150 gr.

.

. .

Weight--Cartridge. Chamber

.

,

.

Weight-Powder Muzzle

grip

. .

uniform-one

Weight-Bullet

51”

26!6”

hetiveen graduated

8 oz.

1 lb. 12 oz.

of bipod

Length

Sights

1 lb.

4 lb. 8 oz.

.

Weight

Distance

Machine

:

48 to 50 gr. About

.

.

48,000

395 gr.

. 2700 ft. per second to 49,000

Ibs. to sq. in.

In the Lewis Machine Gun cartridges are under mechanical control at all times and feed is absolutely positive. The

gun will function

depression In this

and when hand-hook,

and description of the

gun

are

perfectly turned

at any angle

on either

instructions

of the corresponding so combined

of elevation

side or upside

as to manual mechanical

as to associate

or

down.

operation functioning

the effect

with

the

cause,

and

familiarity To

handle

know

about

He

and

The

gun

himself.

so well

that

be able easily

properlv,

way

to

actual

the operarq know

their

it is not

to dismount

as he would unusual

operator

to fix it.

And

must

its parts,

ti:qir

characteristics necessary

and

to stop to

as he would should

immediate

and

extract

the gun

as

his rifle. the gun

what

is the

fix it at once

be immediate reflexive.

assemble

when

not only

he must

rifle.

Recognition

and handle

symptom

at once

and subconsciously correction,

direct

He must

and adjustment,

slightest

tell the

but how

most

them.

must

naturally must

relations

tendencies

think

in the

a machine

it as he knows

functions, their

to lead

with the gun.

is firing matter,

as naturally

a fired shell from and

instinctive-

his

DISMOUNTING To niece

dismount spanner

For detailed

and STRIPPING

the gun, (which

a cartridge

stripping,

drifts

To Remove. Press give butt

To Strip. l‘urn

out

(It

butt

Turn

stock.

hold,in

one-eighth

is not

tang

butt turn

advisable

screw,

out both

mouth-

are sufficient.

latch

with

STOCK

and

stock

the barrel end)

are required.

BUTT

bullet,

and

has a screwdriver

to

releasing

butt

plate

point

of

to left and withdraw. strip butt

butt tang

screws

and

stock.)

from

butt

remove

butt

pull

back

plate. After

removing

guard

far enough

down

until

butt

stock

to permit

it hangs

at such

locking against

pin moves freely. gear so as to use

further

dismounting.

To Remcve. lugs clear

their

lift feed cover

To Strip. spring

Press

and pull feed

trigger,

angle

that

slide guard as handle

to swing

the

receiver

forward gently for rrceiver in

both

thumbs

against

rearward

with

surfaces

on

rear fingers

end

of

until

its

the receiver.

Then

off. Press

the stud

out of its seating

the point

back

COVER

cover

retaining

an

Then guard

FEED

receiver

hold

rear end of gear casing

of a bullet

on the stop

in the transverse

introduced

through

from the opposite

side of the rib.

lift stop paw1 and

rebound

of cartridge

down

guide

When

paw1 off their and

slide 11

and rebound

pawls

rib by pressing the channel spring studs.

with

and hole is removed Press

it out of its seating.

stud

FEED ‘2’0 Remwe. post so that

OPERATING

Swing

retaining

its cut in hole in feed ating

ARM

feed operating

arm around

lug on

magazine

operating

arm.

arm off magazine post. To Strip. Lift feed paw1 spring

posts,

using

point

To Remove.

Draw and

To Remove. charging

(carrying

back

AND After

handle Lift

until

fixing

bolt

rack.

To

piston

from

pin.

rear

end

post) off striker

out

BOLT

of gear

casing

as above,

and

reaches

out to side.

piston

is released

draw

back

the rack

entirely

out

post. ‘To remove

striker,

to separate

piston

drive piston

connecting

out from

pin, unscrew

rack.

To Strip Bolt. of bullet

oper-

paw1 off their

end of rack

AND

It is not advisable

do so, drive

To remove

rear

RACK

To Strip Piston and Rack. striker

feed

handle

is removed

bolt on striker

of receiver.

and

lift feed

HANDLE

pull charging

PISTON

and

‘Then

of bullet. CHARGING

rear of receiver

magazine

post is in line with

either until

cess in bolt.

Unscrew

and remove

extractor,

lift hook

stud on shank Then

of extractor

pull extractor

feed operating

of extractor

forward

is clear

with

stud. point

of its re-

out of its slot.

RECEIVER

point

locking pin to the rear with To R emo’u~. Push receiver of bullet until it clears its hole in the radiator casing

rear locking thread),

piece.

using

guard

Turn

receiver

as handle. 13

off barrel

(right-handed

GEAR

receiver

and unhook

allow

mainspring

out gear. collet

through

point

The

casing. removed

up gear the

the

gear

and the

mainspring

point

pin.

of bullet

collet

pin and

and shake

against

the

mainspring

force

out

mainspring

so as to

mainspring

from

with

Unscrew

of bullet

forward otit of

pin

from the gear case hinge stop

to unu.ind.

Press

with

locking

gear casing

Press

Strip.

To

CASING

Push receiver

To Remoue.

mainspring casing

collet

with

the

may

point

be of a

bullet. GUARD

To R P??lOVP.

Hold

back

trigger

and

pull

guard

off

to

the rear. ‘lb Strip.

Punch

back trigger

and

out

trigger

lift out trigger

pin and

and

sear

pin.

Pull

sear.

EJECTOR Pry and draw ejector

up rear

end

out.

Insert

hub,

of ejector point

so as to raise rear end

and lift out with

and remove

of its hole gas regulator

key

in the

radiator

when except

of bullet for

out of recess,

necessary.

CUP with

point

radiator

of bullet

casing.

until

Unscrew

cup.

BARREL It is not advisable except

point

of ejector

REGULATOR

Lift end of gas regulator is clear

with

in hole in receiver

fingers. GAS

stud

cover

of bullet

GROUP

to dismount Barrel

for replacement. 11

or strip should

the

barrel

not be taken

group out of

CLAMP r.nscrelv

the clamp

r,touthpiece carries

spanner

the front

and

sight

and

sembled

the

clamp

ring

CASING

casing

front

radiator

on barrel ring

positioning

lvhich

screw.

FRONT

CASING

casing

to the radiator

clamp

off forward.

RADIATOR Remove

c.ith screxvdriver

remove

RADIATOR Pull radiator

RING

rtng screw

rear,

casing

REAK

which

is permanently

rear locking

piece,

as-

off to the

rear. GAS Unscrew and

rack

and

CYLINDER

remove

as a wrench

the gas cylinder, (the

cross

using

section

the piston

of the rack

per-

mits this) GAS Turn ner

CHAMBER

out of gas chamber

(thread

barrel

mouthpiece

span-

is left-handed). BARREL

Unscrew spanner

GLAND with

barrel

(thread

MOUTHPIECE

mouthpiece

with

barrel

about

three

mouthpiece

is left-handed). BARREL

Keep

barrel

drtve

barrel

barrel

mouthpiece.

mouthpiece

back

enough

GAS When chamber

the

barrel

is left lying

on to free

threads

it in radiator

and

by striking

CHAMBER

comes

out

in its recess 15

of

the

radiator

in the rad.iator.

the

gas

PLXTE B;\KREL

III

GROUP

(3)

PISTON

(;KOUP

.4ND

3-l

Barrel

3-2

Barrel

Y-3

Kadiator

3-4

Radiator

Casing,

3-7-0.~ Radiator

Casing,

KACli

ASD

(8)

Mouthpiece

Front Rear

3-i

Gas

Regulator

Key

3-6

Gas

Chamber

3-7

Gas

Chamber

Gland

3-8

Gas

Regulator

Cup

3-13

Clamp

Ring

3-14

Front

3-15

Clamp

Sight

3-19

Gas

8-l

Rack

8-2

Striker

Ring

Screw

Cylinder

8-3

Striker

8-4

Charging

8-5

Piston

8-6

Piston

Fixing

Pin

Handle Connecting

Pin

(assembled)

2-I

Y-l

9-h * T/

-4L &_P4 d2-6

A-2

Jq-J Y-

PLATE b3XIVER

GROUP

MAINSPRIN(;

(2)

GUARD 2-l

R eceirer

2-2

Ejector

2-3 2-4

Ejector Safer)

2-6

Receiver

IV

GROW

GROUP

(5)

Cover

Locking

9-l

Gear

Casing

9-2

Gear

Stop

o-3

Gear

Stop

Spring

9-4

Gear

Stop

Pin

Pin

9-6

hlainsprin::

Collct

9-7

Casing

9-8

Gear Mainspring

9-9

Mainspring

9-l 1

Mainspring

Pin

Collet

5-l

Guard

5-2

Butt

5-3

Butt

Latch

Spring

5-4

Butt

Latch

Pin

5-5

Guard

Side

Piece

(right)

5-6

Guard

Side

Piece

(left)

5-8

Sear

5-9 5-10

Sear Spring Sear Pin (used

5-11

Trigger

I,atcil

also for Tripper

Pin)

(91

a

PLATE KECEIVE:R

(;ROUP

IV

MAINSPRIN(;

(2)

GUARD

GROW

2-l

Receiver

2-2

Ejector

2-3

Ejector

2-4

Safet)

2-6

Receiver

9-l o-2

Gear

Casing

Gear

Stop

9-3

Gear

Stop

Spring

9-4

Gear

Stop

Pin

GROVF

(5)

Cover

Locking

9-6

Mainspring

9-7

Gear

9-8

Mainspring

9-9 9-11

Mainspring

Pin

Collet

Pm

Casing

Mainspring

Collet

5-l

Guard

5-2

Butt

5-3

Butt

Latch

Spring

5-4

Butt

Latch

Ptn

5-5

Guard

&de

Piece

(right)

5-6

Guard

Side

Piece

(left)

5-8

Sear

5-9

Sear Spring

Latch

5-10

Sear

5-11

Trigger

Pin

(used

19

also for Trigger

Pin)

(9)

PLATE FEED

MECHANISM

v (6 AND i) BOLT

GROUP

6-1

Back

Sight

Axis

6-2

Back

Sight

Axis

Pin

Washer

6-3

Back

Sight

Axis

Pin

Split Keeper

h-4

Back

Sight

Bed

Spring

O-5

Feed

Cover

Pin

h-6

Stop and

6-7

Stop

6-X

Rebound

G-9

Back

Sight

Leaf

6-10

Back

Sight

Elevating

6-11

Back

Sight

Slide

h-12

Back

Sight

Elevating

Screw

Head

b-i3 Back Sight

Elevating

Screw

Head

Elevating

Screw

Head

Rebound

Paw1 Spring

Paw1

6-14

Back

6-24~

Cartridge

Sight

Paw1

Guide

7-l

Feed

Operating

7-2

Feed

Paw1

7-3

Feed

Paw1 Spring

4-1

Feed

Operating

4-2

Bolt

4-3

Extractor

Screw

(assembled) Arm

Stud

Spring

Pin

(4)

PLATE BUTT

STOCK

(lj,

FILLING HANDLE

SPADE

VI GRIP AND

AND

(12)

BIPOD

l-h

Butt

Stock

l-1

Butt

Plate

1-2

Butt

Plate

Screw

I-5

Butt ‘Tang

Screw

12-??A

Spade

12-49

Magazine

11-1.4

Biped

(assembled)

Grip

(assembled) Filling

Mount

23

MAGAZINE MOU?JT

Handle

(assembled)

(11)

ASSEMBLING The given

gun

is assembled

by

advisable 1.

to assemble Barrel

Barrel

c.

Gas chamber

d.

Gas

e.

Barrel

f.

Radiator

casing,

rear.

g.

Radiator

casing,

front.

h.

Clamp

i. 1.

Gas

regulator

cup.

Gas

regulator

key.

4.

Gear,

5.

Guard

into radiator

Feed

8.

Piston

and

gas chamber.

cylinder. mouthpiece.

ring.

cover. gear

casing

(merely

and

and

Charging

arm

rack handle

fully). Feed

cover.

11.

Lock

gear

with

srock.

locking

it on receiver

(screw

barrel

(pressed bolt

(replace

by raising

to engage it. Replace butt

receiver

slipping

operating

forward 10. forward 12.

order:

gland.

gear to act as handle). 6. Receiver and barrel 7.

just it is

in radiator.

b.

Ejector. Ejector

operations dismounted

:

group

2. 3.

the

completely

in the following

n. Gas chamber

9.

reversing

When

for dismounting.

gear

fully

on striker charging

case

and

pin. and up against

onto

receiver).

over

to left).

post. handle,

pushing

push

guard

it

Care

should

Cl)

To

avoid

of the

barrel

casing

rear locking

(2)

:

be take”

damaging

the projections

in replacing

To especially

barrel

mouthpiece.

and

on the rear face

radiator

in

radiator

piece.

avoid

parts,

barrel

damaging

the

gas

the

threads

chamber

or allowing

df the threaded

gland,

sand.

gas

cylinder

a”d

dust or grit to get into

threads. (3)

To see that

in its recess

so that the barrel barrel.

(The

must

be toward

the barrel (4)

the

In

is correctly

the barrel

of the gas chamber front

inserted

is pushed will

and its smallest

erld of the

home,

encircle

the

diameter

radiator.)

Also

that

is at the bottom

and

of the gas chamber.

replacing to the

That over

chamber

before

so that the gas port

the the

feed

cover,

that

the

feed

operating

stud

is screwed

right. feed

bolt as far as it will slipped

gas

loop is tapered,

is turned

is over (5)

loop

barrel

over the center arm

the

in the radiator

operating

go and that

striker

the

before

cam

putting

into

the

slot in the bolt piston

and

is

bclc in

gun. (6)

That

when

is over to the left gage

the

bolt

the feed

operating

feed

operating

stud

arm

will en-

its groove. (7)

handle,

That the

forward 18)

end

of

That

twelve

after

in-erting

charging

up into place from

replacing

so that

bolt,

handle

is

its stroke

before

and the gear

engaged

the

tension

to fourteen

the rack will strike

the

of the pounds.

butt

tang 25

piston

brought

and to

the gear with

the

casing

extreme is swung

the rack.

mainspring

is correct-

If the tension too

charging

hard

is too low

in opening

and

may fail to close

the action too high gun

the gun will

will not open ‘1-O

hutt gear

too

gun

fast;

far enough

ALTER

Remove disengage

or the

fire

may

and

with

down

gear

push

charging

again,

slide

high

the

cartridge.

TENSION

draw

guard

hack

enough

to

casing.

To inrrrare tensionhold up gear casing engaged

If it is

too

to feed the next

MAIKSPRlNC; stock

misfire.

if much

rack

and draw

casing

so that handle

guard

hack

gear

fully

does

to

engage

gear DraM

handle.

not

forward.

forward

so as to keep

charging

engage

rack

and

Raise

gear

casing

it, and

replace

h.utt

down

so that

gear

stock.

To derrtasr tension hold is not

engaged

with

Then

raise gear

guard

forward

charging The twelve spring

handle

to snap

average

working

balance

hold back

balance

spring

balance

and record

gear and

casing,

forward To

with

rack

and

uiil

cause

mainspring it, engage

hack

charging

it is just

with

started

charging

charging handle

the

is from hook

gun

is not

about

not be in tension.

26

to be fired

; of

Hold

at this point,

reading. the

of

handle

by means

to the rear. handle

slide

to close.

weigh

gun)

handle.

which

of the

with

so as to keep

charging

and the action

tension

draw

hack

gear

gear

pounds.

so that

casing draw

engage

(supplied

trigger;

spring

should

casing, to engage

to fourteen

When

rack

the mainspring

OPERATION TO

FILL

MAGAZINE

Turn

magazine

upside

down.

loading

handle

in

Insert This

holds

rotating

WITH

magazine

latch

magazine

center

magazine

on

LOADING

socket

HANDLE

in magazine

out of engagement independently

center.

and permits

of the

rest

cf the

magazine. Spin distorted. Rotate

the

cartridges

successively

their

bullet

loading

magazine

to see

and

at the same

the

separator

center between

will

pass

Do

not

leave

cartridges,

as in firing

this

would

magazine

holds

magazine

remove

center.

FILL

Slip under

locks

loading

loading

Place clip

Press

turn

it is not

time pins

place so that

groove space

in the between

a stoppage.

and when

magazine

The

it is filled

center

back

LOADING

or other

until

TOOL

base.

down. center

magazine

to see that

up

it rotates

(at right),

over

latch

full of cartridges

ejector

cause

WITH

upside

tool until

a clip

in clip

magazine

and

in magazine

Spin magazine

spiral

that

magazine.

tool to table

magazine hole

the

an empty

cartridges,

MAGAZINE

Attac!.; Turn

handle

This

into

forty-seven

loading

it snaps. T‘O

ends

handle

magazine

engages freely.

in top of chute bullet

post

post.

ends

to left

and insert (toward

center). cartridges

down,

stripping

them

out of clips

into

chute. Put on pressure close to clip and do not depress points. Repeat often enough to keep chute full of cartridges. c_,

Rotate

magazine

Cartridges If

a space

backward

from

will feed in

magazine

Turn

back

(clockwise).

magazine.

magazine

past vacant

When

left to right

into

is

skipped,

space

and then

is filled,

unlatch

rotate

rotate and

magazine

center

until

TO

LOAD

GUN

handle

is fully

magazine

forward remove

again. from

it snaps.

post.

This

locks

magazine.

See that

the charging

Place piece of

a magazine the magazine

magazine

down.

Rotate

it very slightly

zine latch

engages

Draw gaged

back

Drawing they

by hand

what

the

In the next its right

the

pressure gear

the

gear

and

winds

the striker from

5; of an inch

still further causes locking

position

surface the

in the

bolt

lugs

in

to

out

of

the right

rotate their

dues. which

the first 1,’ .i back

through

merely

draws

of the bolt.

and

of rearward

rear\vard

with

the mainspring

post moves the face

it is enand rack

of firing teeth

During

movement.

in its locked

side the cam

the bolt and turning

gas

so that

part of its cut in the bolt and

bolt itself remains

the maga-

the piston

the

the point of the striker

post, driven

fully

back

over

travel

the longitudinal

until

back

opening

rearward

handle dra\vs

rotates

the entire

inchesof

directions, post.

This

the rack teeth

are meshed

during

back

charging

and held back.

and performs

in both

on magazine

the

forbvard.

on the magazine post, the thumb latch to the right, and press the

The

does not muvc.

travel, bolt,

the striker strikes

with

side of its slot in from recesses

right

to left,

in the

re-

ceiver. As soon as the

bolt

is unlocked, 28

the striker

post reaches

the rear end of its cut carries the bolt directly

in the bolt, and back with it.

in its further

travel

The top lug of the feed operating stud, traveling in the groove in the under side of the feed operating arm, cams the feed operating arm so that it swings across the top of the receiver from right to left. The feed paw], acting against one of the outer projections of the magazine pan, carries the magazine around sufficiently to drive the first cartrldge down into the cartridge opening in the feed operating arm by the rotation of the magazine pan and separator pins around the stationary spirally

grooved

center.

At this point

in the leftward

arm, its cartridge received)

opening

commences

travel

(and

to pass under

arms of the feed cover

which

those

to control

arms

of the feed

commence

operating

in it the cartridge carry

it has just

the upward

projecting

the cartridge the

cartridge

guide,

and

as soon

as it

leaves the magazine. Further

leftward

travel

under

control

the cartridge downward

hpressure

At this point the stop

of its spring

paw],

spring

and prevents

Toward

the

downward

rack

at the

notch

rides

ing it against ately

raises

end

rotation

rear

whose

over the

nose

the tension

pressed

front

head lower

surface

of the sear,

29

arm

forward

by its

of the surface

forms

the

temporarily

spring,

it drives

out.

travel

the

of the sear

It agaln

the

operating

of the ejectcr

rearward of

brings and

of the magazine.

the ejector

of the

projection

on the feed

the rear end

pivoting

arm

guide

tension.

is then

further

it info its slot, thus the

stud

which

the bolt strikes

operating

of the cartrldge

the spring

clears

When

of the feed

wtuch

piston of

the

cocking depressimmedl-

The

rear

terminating The

has been

top

of

The

notch

rack

arm

over into

rebound

till in

the the

those nose lower

operation. The gun is now

strikes at the

the

butt

presses

so as to is fully

tang,

rotates

the

rack,

drive

edge ready

sear

engages

of the to fire

30

aiainst

wound

rack

left, the

opening

cartridge an

prevent

now the

extreme

the

of the of

the

cartridge

which

paw1

magazine

mainspring with

is now

brought

receiver

of the

then

stroke.

and the mainspring

meshed trifle

the

it, the

presses projection tation,

of the

feed operating

cartridge the

end

the opening

in

guide exterior

backward

ro-

up. gear, the

whose rack

with and

teeth,

forward

the

a

cocking

suspends

the

TO FULL Press cally

trigger

as long

When

AUTOMATIC

and

hold

as trigger

trigger

FIRE FIRE

back.

Gun

is held back

is released

gun

stops

‘1’0 fire To

some

single

shots

release

quickly Bursts

practice.

by holding

back

releasing. When

the trigger

the trigger

and

the

rear end

side

because

simply the

drives

the

The

bolt

arm, feed spring

stop paw1 back

forward cams paw1 and

engages

behind

on the feed

prevent

31

is

which

Its left siot,

but

rotating

it

by the cruciform

at this point.

arm

projection

with

the

bolt

side of the feed to the

right.

on the rim

of

it. operating

its intercepting

jection

cam

without

forward

operating the

out

rack

in the bolt. of the

in its cut in the under over

down

The

mainspring,

rotation

carried

the feed

of time and

is drawn

forward

from

stud,

slips

stud to

side

in the receiver

feed operating

the magazine The

left

be fired

the gear, whose teeth The striker post is at

slot in its cut the

bolt is prevented

and traveling operating

lotates

requires

may

rack.

of the

of the rack.

against

shape of the bolt-way The

pressure

of the cam

is pressing

it how

notch

immedi-

shot

period

in the

those

is empty

release

length

the required

consequently

with

desired

the sear

by the

unwinds,

and

for a single

is pressed

driven

forward

trigger

the

with

automati-

FIRE

enough

of any

of engagement

are meshed

press

fire

firing.

SEMI-AUTOMATIC

ately.

will

until magazine

arm

presses

a magazine

the pro-

The

head

ejector, the

of the

which

rear

of the

behind

bolt

it presses

now

back

ejector

reaches into

the

the

to be pivoted

head

ejector

out

of

the

cut, causing

into the bolt-way

the bolt.

The

face of the bolt

which

is held

receiver,

and

ready

now strikes

for

it drives

the base of the cartridge

it in the the

loading

cartridge

ramps

before

it

of the into

the

chamber. The tridge

extractors

spring

over

Just

as the cartridge

seats,

clear the front

of the cruciform

by their

grooves

guide

Further l‘he which

face

rests

still drives

rim

as soon

reach

as the car-

lugs

As the bolt

their

locking bolt

the rear-end pressure

post

against

into the locking is completed

the primer

of

its

of the cartridge

recesses. is not possible.

of the barrel causes

to the right.

fully

part

bolt

formed

and

the striker

left side of the cam

the bolt around

front

of the

of the mainspring

forward the

locking

longitudinal

lugs

of the bolt-way

of the

The

the striker

in the bolt, to cam

locking

part

against

is pressing

the locking

the

movement

of the cartridge.

post, which

against

and

forward

bolt

the head

the

the

seats.

recess

slot turns

of the receiver.

the striker cut,

This

carries

post enters the

in the chamber,

striker and fires

the cartridge. The another

firing cycle

When the barrel,

of the cartridge

the bullet

passes

gas under

high

port into

the gas

regulator

cup onto

This

drives

non- develops

the

power

For

of operation. the

chamber the

and

head

the piston

gas

pressure

port

near

is driven

through

the

the muzzle through

of

the gas

hole in the gas

of the piston.

back .?3

and produces

the same oper-

ation of parts made

described

by hand,

The

shell,

in the

with the bolt, bolt

strikes

scribed.

and the

The sharply

throws

the’ shell

end

gun

will

to feed ” position

trigger

is still held

If the trigger action

at

If the trigger

as previously

of the’ ejector,

side

of the

left fire

dewhich

extracted

shell,

or will remain

in the

port. again

depends

beginning has been

notch

back

upon

whether

or not the

back.

the gun will continue

the rocking

ejector,

is still held back,

the

was

shell.

is drawn

head

out of the ejector

“ ready

depressed,

of the

the

stroke

of the fired

on the face of the bolt until the

of the

against the

the opening

grip of the extractors,

is carried rear

where

for the disposition

pivoting

swings

Whether

above

except

in the

and the sear consequently

of

the

closing

stroke

of the

firing. released rack,

so that the sear intercepts the

gun

is left

” ready

to

feed.” ‘I‘he follows

cycle

of operation

may

:

33

be briefly

summarized

as

PLATE

VII

10-1~ MAGAZINE (ASSEMBLED) The

magazine

cartridges. loading

holds forty-seven Instructions

magazine

Page 27.

35

are

given

for on

L

PLATE

VIII

1740~ LOADING TOOL (ASSEMBLED) instructions

for

loading

arc gi\,rn

tool

the

21 and 28

37

use on

of

the

Pages

BACKWARD ACTION

OPER.ATES

OF

. .

Gas

ACTION

.

Piston

and rick

Striker

post

Piston

bolt and it to the rear.

.

arm

( Feeds cartridge onto feed arm and next one into /

.

i FORWARD

position, rebound

Mainspring

,

Piston,

and

Feed

oI’EK*rES

. striker

.

operating

forces (left) paw1 to rear.

ACTION

AcTIoN OF

Bolt

carries

( Extracts empty shell, operates feed operating arm, ; ejector, stopped by butt tang. I

Feed operating

rack

stopped

! Unlocks

.

. .

Magazine

rack.

,f Mainspring and ( by butt,tang.

I

Bolt

and

.

Piston

and striker

post.

Botrefiocked and round

pobt

f Feel! operating t ter;!;e,Into

.

arm 5s

arm, c;+I-chamber,

” SAFETY *’ TO The

PUT

THE

GUN

gun

being

“ ready

to feed,”

and

sear

engaging

rack,

dle back rear notch

encloses

the

shank

In this position SVHEN

Al’

hack

charging

handle

dotr-n

safe:y.

Gun

(and

han-

until

handle.

its Pull

is locked TO

at “ Safe.”

PUT

GUN

to cock. is again

This frees safety. ” ready to feed,” and

is pressed.

the safety

\vhen

the bolt is filling

as to prevent

up’safety

ACTION

Press Raising

the charging

press

“ SAFE”

Draw

will fire if tringer

with

”

handle to go forward enough at the front of the slot in the

the gun

IN

” SAFE

of the charging

trigger, allowing the charging to engage \vith the under cut safety.

AT

dust,

the

charging

the ejector sand,

port)

water,

etc.,

handle closes

from

is forward

the action

getting

so

into the

receiver. The magazine water

gun

Lvith charging

on post and

proof,

and

put inro action

may

forward,

raised

be carried

instantly

To put in action,

handle

safety

chamber

is practically

safely

empty, dust

and conveniently

and and

by one man.

press down

safety

and pull backcharging

handle. CAUTION. harrd 50 that

Neucr the

Remember

bolt

that to

rests

when

handle

is pulled

rear,

Always

put it ar “ Safe.”

Ict tAe rharfiag on a loaded

magazine gun

in

forward

by

the clrambcr.

is on gun and charging

is cocked 31

hurdle

cartridge

and

ready

to fire.

When

carrridge

magaztne

latch,

in

remove

will fire the cartridge ramps

may and

which

was

be

fired,

press

oier

pull the trigger.

in position

in the

l‘his loading

in the receiver.

When

it is necessary

in receiver,

pressover

hold charging hand

receiver magazine

handle

with

and ease charging

cartridge

from

Then gages

and

cartridge against

back

raise

left hand, into

press down

through

so that

remove

press

trigger

slowly

bolt-way

handle With

firing

and

forward

ramps

charging

safety.

cartridge

without

latch

handle

loading

pull

to unload

magazine

so that

of bullet

loading

\vith

right

so as to push

in receiver.

fully

point

cartridge magazine,

sear

en-

of another

slot in top of receive1

it can be removed

through

ejector

port. After charging

unloading handle

tain that gun

gun

to cock

is empty

always and

and

snap

pulling

that

receiver.

40

there

(by

trigger),

drawing to make

is no cartridge

back cerin the

CARE and ADJUSTMENT It is necessary dition

of each

file, oil-stone

should

continually

the should

Gear,

secure

are

Ffet/

mainspring

Operating

feed paw] spring

by

use

of

by an armorer.

points

:

and chamber,

project

from

the

the rear face

See that gear teeth,

that

gear

case

hinge

stop pin is

is not broken.

it is not damaged.

Ann.

Observe

Notice

and

of the con-

on the muzzle.

are properly

Fled Cover. damaged

which

damaged,

See that

only

of barrel

and Mainspring.

not

and that

Qecror.

he made the following

and the thread

Casing

spring

informed Adjustment

the interior

lips of the chamber,

of the barrel,

gun.

include

Inspect

Barrel.

and

keep of

or emery

Examination guide

to part

whether

whether

the

that

the

feed

paw1 and

adjusted. the

cartridge

pawls

and

guide

is

spring

are

properly

assembled. See that

Pirton. that

the piston

the

teeth

and

the

damaged,

and

that

the working

are

not

burred

connecting

cocking

or

rough.

The

edges

of

or

roughness

notch

pin of the

surfaces Note

is not loose, rack

of the

whether

are not

striker

the

post

striker

is

damaged. Bolt. Any burrs with

oil-stone

or fine

maximum

heading

maximum

heading

\Yeigh ance with

each

emery

gauge. gauge hook

be

slot

should

removed

cloth.

Test

A bolt

which

be smooth. by an armorer

head closes

space over

with the

be changed.

by engaging and

Lvhen extractor

extractor.

cam

must

extractor

extractor

Read balance exchange

the should

pulling moves.

hook

of spring

bal-

at right angles to bolt. If under three pounds,

POIKTS

KEFORE

See that

bore

Weigh

mainsprrny

(twelve

to fourteen

Verify

gun

are in place

and

secured

Find1 that feed spring.

that

oil can

Test on

chargrng

t;rey,

necessary

*

gun

all tools

and

and

magazines

against

that

arm

spare

parts

are properly

loss or damage

lvith

post.

Hold

to

charging

moves

ejection

hatidle

if

in trans-

is full.

See

operating

magazine

tension,

oil again.

to see that

containers

‘Lest:

correct

in doubt cases

in their

portation. See that

and

pounds).

oiiing-if

Examine

F’IRIXG

is clear.

handle

u hen it does.

dummy that

freely, main-

Place

empty

cartridge.

it with

prove

moles Weigh

right

feed

hand

and

mechanism

work rotates

magazine. POINTS Magazines Empty

magazines

removed able delay. the entry

DURING

should

from

be kept

should gun,

be

replaced

but should

Deformation of dirt or grit

of

FIRING in container be refilled

the

in the bullet

rim

until

required.

in container without

of the

when prevent-

magazine

or

groove

in the magazine A partially against.

center should be carefully guarded emptied magazine should be replaced by a full one when fire ceases temporarily. During temporary cessation of fire, raise safety. If unload gun and oil bolt, striker post and time permits, Weigh spring and adjust tension if necessary. piston. Do not allow tension to drop under tbvelve pounds, as it might cause breakage of parts. If gun misfires, wait a few seconds before drawing back charging handle. 4.3

POINTS Unload Relax Clean

(and

AFTER

FIRING

snap).

mainspring tension. and oil barrel, cylinder,

gland. Collect

any

Examine,

unfired

clean

cartridges

ptston

and

among

empty

and oil all parts

of gun

gas

POINTS

WHEN IS

1. 2.

Bore oily. Exterior and

3.

Nothing

4.

Sight

down.

5.

Spare

parts

6.

Cleaning

7.

Mainspring

a.

Charging

MACHINE

PLACED

working

IN

parts

GUN

BOX

oily.

in bore. in box.

material

and

oil in box.

released. handle

forward

44

and safety

shells.

as soon

ticable.

up.

chamber

as prac-

NOTICE TO ARMORERS IN CHARGE OF LEWIS MACHINE GUNS The

efficient

depends striker

upon

working

of the

the bearing

post and

Lewis

surfaces

the sides smooth.

In most

gun itself continues

to keep

the surface

smooth,

Sometimes, Any

on either slot

in the

and

such side)

in the

and secure

of rhe

(generally

a very emery

perfectly

smooth

slot in the bolt. Careful attention given

to these

most

been carefully If either

post

too coarse

tact

slightly

“ burring”

become may

be caused.

(generally

on the

side)

remove

must

at

bearing and

cam

surfaces, altered

and

between

both

of the cam-shaped always

regularly

surfaces; slot edges seldom

or too much the

cloth,,

any rbughness

surfaces edges

however,

materials

these

of the by wear

or very fine emery

this roughness

is used to smooth may

both

must,

smoothed

“burr-

of the cam-shaped

left-hand

bearing

and

important

the sides of the striker

slight

as follows:

fine oil-stone

post

con-

well oiled.

working

post

the

of the

sliding

caused

edges

with oil, and thus

sides of the,striker

guns,

“ burring”

on

smoothed

action

are kept

smooth

striker

largely

in the bolt

the

of this

of new

the or

guns,

parts

or on the bearing

bolt

Use either

case

roughness

be carefully

or powdered

the

prevent

of the sides

right-hand once

provided

however,

may occur

ing” gun.

gun

the sides of the

of the cam-shaped.slot

being kept perfectly tact properly

machine

between

angle more

be

but

after

have

once

occurs. careless

force

of sliding

con-

roughness

or

d

J

d

PLATE

IX

BACK SIGHT h-l

Back Sight Axis Pin

O-2

Back

Sight

Axis

Pin Washer

6-3

Back

Sight

Axis

Pin Split

6-4

Back

Sight

Bed Spring

h-0

Back

Sight

Leaf

6-10

Back

Sight

Elevating

6-l 1

Back

Sight

Slide

6-13

Back

Sight

Elevating

47

Keeper

Screw

Screw

Head

\ -

12-52 u!

1)

I 12-53

F+ 12-51 12-54

PUTE

X--ACCESLIOKIES

PLATE

X

ACCESSORIES 12-jA

Shell

12-1A

Charging

Extractor

(assembled)

HandleExtension(assembled)

12-50

Barrel

Mouthpiece

12-24~

Barrel

Cleaning

12-51

Cylinder

Cleaning

Brush

Cleaning

Mop

12-52

Cylinder

12-53

Barrel

12-54

Oil

12-55

Spring

Spanner Rod

Cleaning

Brush

Can Balance

49

(assembled) (wire)

(bristle)

CLEANING The after

gun must

firing.

solvent

be cleaned

Barrel

as soon

gas chamber

cleaned

using

in other

and

magazine

rifle,

on patches The

model

sear engages

be taken taken

securely

off The

corked

with

tubing

well above

Cleaning duce

Cleaning

nuzzle, and

the

with

U. S.

nitro-solvent

dismounting

be drawn

solution

for metal

receiver,

the

the gun.

back

until

and

suitable

be slipped

the

as

from

possible

over

front

gland port

must

must

be

and a short length the

muzzle

will stand

of the

in the tube

muzzle.

must

be taken

lips of the chamber the barrel

the barrel

casings,

gas

corks

solution

the end of the

as far

the

rubber

ammonia care

fouling,

radiator

and the gas chamber

chamber

must

the

greatest

the guide

at

prescribe4

for cleaning

merely

be removed,

so that

The

the

out.

of rubber barrel

also

the rack.

and rear, must be

cup,

should

rod

methods

not require

may

To use the ammonia must

cleaning

issued

1906.

handle

and pistbn

the same

does

oil or a nitro-

gas regulator

at once.

Introduce

of cloth

charging

oiled

solutions

with

The

gas cylinder

respects

the cleaning

as soon as possible

be swabbed

gland,

To Cfeon Barrel. pursuing

thoroughly

should

as gun is unloaded.

and

be temporarily

and OILING

not to bend

or injure

at the rear end of the barrel.

the muzzle

is directed

the

of injuring

danger

so as to rethese

pro-

jections. Cleaning several driven have fouling

days into been

the after the

barrel pores

completely

solution

should

repeated

every

fired and

until

the acids

of the steel by the pressures

of firing

the gun

be

has been

neutralized.

neutralizes

acid 51

The residue

ammonia

day

for

metal

at one application.

--

To C/can der

need

piston

Gas

not

Cyiinder.

be

and insert

in receiver. the

out

cylinder

Clean

then with

For temporary

taken

mop

cleaning

first with

cylinder

toaked

with

hard

into squaled

Action

against

gas passes should

al\vays

available fred

to

operating

firing stud,

well

off

gasoline

piston

Magazine

spacer

ring

should

should

he kept \vell oiled

be

and

Be liberal

fouling should

and

the

rack

any time

should

outer

to prevent

their

is

l‘he

of cartrldge scrr\v

sticking

in use of oil.

A good grade of high oil should he used.

again.

also be oiled

edge All

as

oi the bolt

Whenc\,rr

lightly.

53

with be dried

clogging

inside

to oil them

and

oiled

hard

friction and

oiled.

latch

not

end.

oiling of moving parts, the and parts through which

it is advisable

frequently,

be

rack well

unscrewing-if

with

post

then

Push

Soak

prevent

striker

may seize and should

unscrew.

Additional they bear

be kept

during

and

thread

before

cleaned

Lvhich The

hole

be splir at rear

Parts.

Parts

is necessary

IveIl as rust.

piston

and gasoline

‘l‘bread

to

may

and oiled afterward. surfaces

cylinbolt and

through

brush

firing,

of cylinder

cylinder

or oil.

after unscrew.

trying

portion

‘To Glenn xacoline

to

oil before

1n far enough,

rod

a wire

cleaning,

Withdraw

and oil.

If gun is left uncleaned make

of gun.

flash

threads ftom

rust.

_ First Position-Charging Handle forward.

,I‘ry mngazine. If it rotates freely to left: change it. is fixed, pull 2. If magazane hack charging handle and continue firing. 1.

.?. ‘4 ..

If 2 fails,

change

magazine.

If stoppage recurs, examine feed paw1 and stop and rebound pawls. If feed paw1 is broken magazine will not rotate. 5. If 3 fails and trigger being pressed gun does not fire, examine mainspring. If light, tighten ; if broken, changegear If mainspring all and casing. right, change piston and rack. 6. If charging handle will not comrback,use charging handle rstension or belt. If stoppage recurs, examine chamber.

/

I~mptymagazine,no round inchamber. I I) Misfire. :(0) Space in magazi ne. (c) Insufficient rotation of magazine. Damaged magazine.

Empty magazineon post. Charging handle forward on rauge. Leave space in magazine.

Damaged feed pawl orstop or rebound pawI. (.I) Weak or broken mainspring. (:) Broken or damaged striker.

Hard exrraction. (3) Expansion of empty case. (1;) G:-it or rust in

ou Range. I‘ut damaged dummy in chamber, pull trigger and put full magazine rln po\t,

Second Position-Less than a cartridge length fro”1 forward position.

Third Position-More than 3 inches hack.

Use charging handle extension or double pull through an,, pull back handle. Exan~in~ round ejected, if(a) Damaged or too large tou”d, continue tiring. (b) If correct, take off magazine, insert shell extractor into chamber and push home with bolt and withdraw with front portion of separated case. (c) Separated case is telescowd on to cartridpe. _, continue firing. N. H.--In nine cases out of ten the next cartridge pulls out the separation. (d) If separation recurs shortly, chang- bolt.

1.

Examine ejection opening; if there is no obstruction, pull back charging handle, continue firing. If recurs, take out gas regumagazine lator cup, remove and fire one round; replace regulator cup large hole to rear. Clean o”t gas cylinder, oil

Filea groo~earound

cartridge case inch from base. Separated case telcscoped on to nrx~ cartridge.

Ditto 1 inch ShOllldW.

I

,I‘00 sharp extract- 1 Olh, which cut cartridge case at base. I Bolt has not gone 1 hack far enough ; to getbehind base I of cartridge. (3) Friction in gas cylinder. (1,) Hard extraction.

I

-L

-

fro”)

1

S T 0 P P A G ES-Continued

working parts; if any roughness on striker post or cam slot in bolt, change them.

Third Position-Continued.

2.

If on pulling hack handle there is little or no resistance, if main spring is light, tighten; if broken, change.

3.

If an empty case is in chamher or ejection opening, take off magazine, draw back charging handle, and unload without firing. If empty case is in chamber, force out with cleaning rod from muzzle end. If there are no signs of extractors, or only one extractor bolt; gripping it, change otherwise continue firing.

4.

If stoppage recurs, ewatuine extractor, exchange whichevrl is faulty.

Weak or broken mainspring.

(a) Had extractors. (I)) Hardextraction. (c) If empty case is in receiver, weak extractors or broken ejector.

on

KWI~C.

M’eakenmainspring.

5.

If charging handle cannot he moved, remove magazine. If charging handle flies forward, change magazine

6.

If on removing magazine, charging handle remains in position as before(a) Help cartridge into correct position on feed way. (b) Test cartridge guide spring. (c) Test mainspring. (1) The If

right

tension

the main

spring

of the main spring is broken,

can easily

the collet

pin will

be told by be “out.”

(a) Damaged mng:asine jammed. (1~)Magazine nOt

0,r Ruww.

properlyonnlagazinc post. Cc) Broken magarine catch spring. Cd) Broken or damaged magazine spwer rinc causing it to &I.

(a) Wexkor cartridlre

broken guide

spring. Cc) Too much gas.

puiling

hack

the charging

NOTE-If the gun continua to fire after the trigger is released, push forward side. This will be caused by broken or weak spring, or damaged sear

trigger

handle.

with

hand

On

SEQUENCE

OF IMMEDIATE

ACTION

LEWIS MACHINE GUN No 1 POSITION (Charging Handle

Forward)

Try Magazine

I

E

__

IF FREE TO ROTATE Change it Reload, relay and fire

IF FIXED (will not Pull chxging handle

I ---.

r

IF GUN

DOES NOT FIRE Pull C. H. Watch ejection opening

IF GUN FlRES SINGLE SHOTS Examine gas regulator

I

c

IF CARTRIDGE IS EJECTED Examine prikr

I IF STRUCK Pull C. H., relay, file

rotate)

IF CHARGING H. WILL NOT GO BACK Remove maga zinc

I IF NO CARTRIDGE IS EJECTED Examine feed mechanisw Repair if necessary

.

IF C. H. THEN COMES EASILY Put on new magazine Reload, relay and tire

IF PRIMER N&L. STRUCK Change piston and rack, rrlwd, relay and tire

IF C. H. STICKY Relay and tire

No. 2 POSITION t( IlarginyHandle between thumb-piece of safety and forward position)

I FORCE BACK CHARGING I ‘l‘ake out yab regulator,

HANDLK

IF STOPPAGE RECURS fire a shot. Insert with large hole to rear.

Clean and oil

No. 3 POSITION (Charging

Handle hehind thumb-piece

of safety.)

Examine ejection opening

I IF C&E IN BOLT-WAY Examine ejector Replace if necessary

IF CLEAR Pull C. H.

YP

I

IF C. H. DOES NOT COME BACK Change tttagazine, reload, relay and fire

~~~ - ~-7

1F C. H. COMES BACK Relay and fire

IF C. H. DOES NOT GO FORWARD Change gear casing (complete)

I

IF CHAMBEROBSTRUCTED Pull C. H. Raise safety, remo\e magazine, clean and examine rim of cartridge

I IF RIM CUT IN TWO PLACES Reload,;zay and

IF RIM NOT CUT Change bolt

-. IF C. H. STARTS FORWARD AND STICKS Pull C. H. Raise safety Remove magazine Inspect cartridge guide Replace if necessary

IMMEDIATE

ACTION

REPLACING PARTS cl TO CHANGE Remove

CARTRIDGE magazine.

TO CHANGE (STOP

GUIDE

MAGAZINE AND

Remove

PAWLS

REBOUND)

magazine,

butt

stock

and

feed cover.

TO CHANGE

FEED

Remove

magazine,

Pf-iWL butt

stock

and

feed cover.

TO CHANGE Remove gear,

EXTRACTORS magazine,

removing

butt stock;

charging

bolt. 60

release

handle

and

TO CHANGE Remove

COMPLETE

magazine,butt

gear; and

GEAK

remove operating

ceiver

locking

stock;

charging

pin

handle,

Force

rod.

release bolt

back

; unscrew

,re-

receiver

,% of a turn.

TO CHANGE Same

KECEIVER LOCKING as gear.

TO CHANGE

CHARGING

Kenlove magazine,

butt

HANDLE

stock;

drop

stock;

feed

fear.

TO CHANGE Remove cover;

EJECTOR magaz.ine,

butt

pull charKinK

Put feed operating move insertin:!

ejector point

handle

arm

cover

and

to right.

01

Re-

ejector,

of cartridge

neath.

to rear.

b)

under-

PIN

COMPONENT REFERENCE

PARTS AND NUMBERS

l-2 1-3 1-4 l-5 l-61\

Butt Plate Butt Plate Screw Butt Stock Butt Tang Butt Tang Screw Butt Stock (assembled)

5-3 5-4 5-5 i-6

2-1 2-2 2-3 2-4 2-6

Receiver Ejector Cover Ejector Safety Receiver Locking

1-I

Butt Latch Spring Butt Latch Pin Guard Side Piece (right) Guard’Side Piece (left) 5-7 Guard Side Piece Rivet 5-8 Sear 5-9 Sear Spring 5-10 Sear Pin (used also for trigger pin) 5.11 Trigger j-12.4 Guard (assembled)

Pin

6-1 6-2

Barrel Barrel Mouthpiece Radrator Radiator Casing, Front G+v Regulator Key Gas Chamber Gas Chamber Gland Gas Regulator Cup Clamp Ring Front Sight (3 heights) Clamp Ring Screw Clamp Ring Positionin SCXW 3-19 Gas Cylinder 3-20~ Radiator Casing, Rear (assembled) 3-l 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-13 3- 14 3-15 3-16

4-l 4-2 4-3 4-4~

Feed Operating Bolt Extractor Bolt (assembled)

5-1 5-2

Guard Burt Latch

6-3 6-4 6-5 h-6 6-7 6-8 6-9 6-10 6-11 6-12

Stud

6-13 6-14 6-24~

62

Back Sight Axis Pin Back Sight Axis Pin Washer Back Sight Axis Pin Split Keepel Back Sight Bed Spring Feed Cover Stop and Rebound Paw, Spring stop Paw1 Rebound Paw1 Back Sight Leaf Back Sight Leaf Elevating Screw Back Sight Slide Back Sight Elevating Screw Head Spring Back Sight Elevating Screw Head Back Sight Elevating Screw Head Pin Cartridge Guide (assembled)

COMPOSEST

PARTS

ASU

n.

s-1

Feed Operating Arm Feed Paw1 Feel! Paw1 Spring Feed Paw1 Retaininp Pin Feed Operating Arm (:I\sem ble d) _ . KRCk

R-2

Striker

8.3 P-4 h-5 b-6

Striker

O-l 9-z 9-R 9-4 9-6 9-i 9x Y-9

Gear Casing Gear Stop Gear Stop Spring Gear Stop Pin .\lninspring Collet Pin Gear LIainspring Casing Mainspring

NUMBERS

9-10 Xlainspring Rivet o-11 Mainspring Collet

6-2.5~Hack Sight Leaf (aSCmbled) 7-l 7-2 i-3 i-4 ,- 5,:

RF.FEKENCE

Fixing Pin Charging Handle Piston Connecting Pin Pi,ton

ill-1A Magazine (wsembled) II-IA Ripod Mount (assembled) 12-l* Charging Handle Extension 1I-5;, Shell Extractor l ?-23A Magazine Container 12-24~ Cleaning Rod 12-27~ Spade Grip (assembled) 12-30a Loadinn Tool(assen~blrdj Loading 12-49 Magaline Handle 12-50 Spanner Wrench (barrel mouthpiece) 12-51 Cylinder Cleaning Brush 12-52 12-53 12-54 12-55

63

(wire) Cylinder Cleaning Mop Barrel Cleaning RI II s h (bristle) Oil Can Spring Balance