12/12/2017
Ar - 15 to bullpup conver sion
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. . . BULLPUP FORUM Bullpup Rifles (Auto & Semi-Auto Centerfire) All Other B ullpup Rifles Ar-15 to bullpup conversion Pages: 1 2 3 [4] 5 6 ... 10 Topic: Ar-15 to bullpup bullpup convers ion (Read 119192 t imes)
Author SHORTN-SASSY ^ Bullpup Fanatic
Re: Ar-15 to bullpup conversion « Reply #60 on: February on: February 26, 2015, 12:57:35 AM » Quote f rom: 908ssp on February 20, 2015, 06:58:57 06:58:57 PM Cute video shows a real sense o f humor. . . .
Offline Posts: 1,805
908ssp, In retrospect, you read Faxon Firearms' playbook, well! I confess to misreading Nathan's Nathan's Court jeste r ex pression, in in the short v ideo (https://www.facebook.com/FaxonFirearms/posts/557934281010341 ). Tr uth is: Upon reading the accompanying accompanying statement, "Tune in Monday 2/23 for the next step forward in ambidextrous weapons platforms, . . ." , ." , I was reminded to the words of Bullpup Bullpup Forum Member, Longzi Longziz, z, "From a history point of view, this counter intuitive approach was having criticism starting at the day it was born. That is, you can only satisfy left-handed or right-handed shooter, but not both." -- --- (http:// bullp bullpupforum.c upforum.com/ind om/index.php?topic=38 ex.php?topic=386.msg1607#msg1607 6.msg1607#msg1607)) and to the truly ambidextrous truly ambidextrous weapons platforms, both, his Longziz #1 Prototype and the Beretta ARX-160 Assault Rifle represent (See Reply #45, above) --- not to mention the fact that we're well into the 21st Century!
12/12/2017
Ar - 15 to bullpup conver sion
In that you've already ordered an ARAK-31 upper, I will await your description of the procedure required to switch ejection, from right side to left side, and back. I sidestepped the AR-15's left- / right-side ejection by orienting the weapon 90 degrees right, resulting in downward ejection --- resting the carbine-length buffer tube assembly over my shoulder ---
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Ar-15 to bullpup conversion
You're on-tr ack to achieve approx. the same shoulder-to- muzzle length with the Faxon Firearms upper receiver -- -
if you shorten the butt end of your lower receiver, a couple inches ---
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Ar-15 to bullpup conversion
And, I can envision a left-to- right/right-to- left swiveling curve d cheek piece riding on the ribs of the Picatinny Rail ---
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Ar-15 to bullpup conversion
with the rear end att ached to the top of the lower receive r butt plate, designed to ride flush with the Picatinny Rail. Bottom Line: It's 201 5! Anyone picking-up a Bullpup rifle, today, should be able to fire it from the shoulder t hat suits him/her best ,without disassembling the weapon. In short: What was acceptable in the 20th Century, is old hat, today ---
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Ar-15 to bullpup conversion
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908ssp Member Offline Posts: 151
Re: Ar-15 to bullpup conversion « Reply #61 on: February 26, 2015, 01:09:31 AM »
The picture you posted of my aluminum ARAK-21 lower is an inch too long. The 2nd generation with the delrin lower is right at the legal limit one inch shorter t han the gun above. I starter w ork on another ARAK this one in 300BLK. I am taking another approach with it I'll show it when I am done I don't like to show work in progress if I can help it. I do sympathize with your being a lefty and while you may not care for them both of the Kel-tec guns are full ambidextrous at leat that is my under stand. I talked to s omeone who had done t raining with the RFB and his complaint was that be eject ing the brass forward he was stepping on it during house clearing drills. He found that most disconcerting. The new one also ejects the brass dow but at the back not sure if that does anything for the problem of stepping on the brass.
12/12/2017
Ar-15 to bullpup conversion
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SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #62 on: February 27, 2015, 10:20:38 PM »
Is there a Faxon Firearms 6.5mm Grendel-chambered ARAK-21, on the horizon? (http://www.65grendel.com/forum/showthread.php?9824-Good-News-from-Faxon-Firearms!).
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908ssp Member Offline Posts: 151
Re: Ar-15 to bullpup conversion « Reply #63 on: February 28, 2015, 01:28:35 AM »
I have no idea. T hey have 5.56, 300blk, 7.62x39 and in a f ew months a whole new upper in 7.62x51. I suspec t that given time the 7.62x51 can be offered in numerous other c alipers as long as t he overall length and diameter are within t he specs of t he 308. Personally I have very little interest in more calipers and I imagine others feel the same way. My 300blk will see very little use compared to me 223 or even my 308 and I have no desire at all to build a AK round rifle. Logged
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Ar-15 to bullpup conversion
SHORTN-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #64 on: February 28, 2015, 05:30:23 PM » Quote f rom: SHORT-N-SASSY on February 11, 2015, 11:14:24 AM ... ". . . upper receiver comes with ejection windows placed on both the right and left side, and it will be up to the user to select which side he/she will want his/her rifle to eject." --- See all4shooters.com Link, above. "The Bolt in this rifle will function in both right- and left- hand configurations." -- - ARAK-31 Ambidextrous From Conception ( http://youtu.be/a7voyz1Ll_8 ) (Jump to 9:00 - 9:25). That sounds like 21st Century engineering, but a video detailing the change from right-to-left ejection would be helpful. . . .
I checked Faxon Firearms Facebook, today, and found this --- "With our new Ambi Ejection Window ARAK-21 uppers, left handed users such as Chris Tran w ill be able to rotate the bolt 1 80 degrees and have a left side ejecting upper." --( https://www.facebook.com/FaxonFirearms#!/FaxonFirearms/photos/a.181309312006175.44583.175993945871045/561090950694674/? type=1&theater ) In view of the above, that's about w hat I expect ed. Now, the que stion remains, What is the required procedure for rotating the bolt 1 80 degrees? ETA: I just noticed our Site Ranking is #11 « Last Edit: February 28, 2015, 05:36:55 PM by SHORT-N-SASSY »
SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
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Re: Ar-15 to bullpup conversion « Reply #65 on: March 01, 2015, 12:38:01 AM » Quote from: SHORT-N-SASSY on February 24, 2015, 11:52:06 AM Quote f rom: SHORT-N-SASSY on Fe bruary 20, 2015, 11:26:42 AM
(https://www.facebook.com/FaxonFirearms/posts/557934281010341 ) FaxonNathan, RE: (https://www.facebook.com/FaxonFirearms/posts/559539754183127 ). OK, so the ARAK-21 now shares with the upcoming ARAK-31 left- and right-side ejection ports. Great! Now, what is the procedure for changing the ejection side, from right to left and from left to right? A v ideo would be helpful. And, under the heading of Looking ahead. Does the Bolt head on the ARAK- 31 have e nough beef in it t o allow opening-up t he Bolt face to accept the .534" rim diameter of short magnum cartridges? Lastly, can you provide our Bullpup Forum a tentative date that Faxon Firearms expects to release a Bullpup Lower for the ARAK31?
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Ar-15 to bullpup conversion
Thanks. In the absence of a res ponse, to date, I did some research and found a brief description of the procedure for changing the e jection side from right to left: Disassembly is required --- (http://www.ar15news.com/2015/02/24/new-faxon-firearms-ambi-ejection-port window-upper/). Logged
Projectile Motion Member Offline
Re: Ar-15 to bullpup conversion « Reply #66 on: March 01, 2015, 10:08:54 AM » Quote from: 908ssp on February 26, 2015, 01:09:31 AM
Posts: 53
I really dig your latest design. You said it was delrin? how st iff does it feel? how did you do the magwell? Did you add an extra take- down pivot point in front of the pistol grip to take some of the recoil?. You said before that takedown was complicated, but it looks like you can just take t he upper half off . Any pics of it disassembled or what you did to the upper half for that new pivot point? Logged
908ssp Member
Re: Ar-15 to bullpup conversion « Reply #67 on: March 01, 2015, 11:50:07 PM »
12/12/2017
Ar-15 to bullpup conversion Offline Posts: 151
Yes the f irst version with the aluminum lower was more c omplicat ed. This version with t he Delrin lower separates with t he removal of t he three pins. The lower is still more complicated than your typical AR but not much more than say a Tavor. I milled most of the material from the mag well and filed out the rest. Not all that difficult with Delrin a bigger pain with the aluminum. Delrin is pretty stiff more than your typical nylon. It machines really nice and leaves and very attractive finish. Logged
SHORTN-SASSY ^ Bullpup Fanatic
Re: Ar-15 to bullpup conversion « Reply #68 on: March 02, 2015, 12:32:06 AM » Quote from: 908ssp on March 01, 2015, 11:50:07 PM . . . Delrin is pretty stiff more than your typical nylon. It machines really nice and leaves and very attractive finish.
Offline Posts: 1,805
Indeed. Delrin was my choice for experimental sabot ammunition, back in the 1 970s -- -
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Ar-15 to bullpup conversion
908ssp, A couple questions: What's the weight of your Delrin lower, complete with trigger- to-sear linkage intact? What's the overall length of your ARAK-21 upper-1 6" barrel assembly (fr om back end of upper, to muzzle end of barrel, not including flash hider?
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Ar-15 to bullpup conversion
Thanks! Logged
SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #69 on: March 02, 2015, 04:08:48 PM »
In v iew of Faxon Firearms' decision to name the 6.5mm Gre ndel "The next caliber" on their list of ARAK-21 chamberings (http://www.faxonfirearms.com/t/faqs), I today E-mailed the following Message to Faxon Firearms President, Bob Faxon: Subject: Finally, an auto-loading 6.5mm Gr endel Bolt-Barrel Ext ension done right !! "Mr. Faxon, "Time was ---
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Ar-15 to bullpup conversion
"Now, Faxon Firearms has designed a proper Bolt-Barrel Extension for the 7.62x39mm/6.5mm Grendel cartridge (http://www.guns.com/2015/02/24/faxons-got-new-7-62x39mm-and-fully-ambidextrous-araks/ ) ---
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Ar-15 to bullpup conversion
"Looking forward t o the upcoming 6.5mm Grendel ARAK- 21 !" Logged
SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #70 on: March 03, 2015, 07:25:10 PM »
And, under t he heading, A picture is worth a thousand words -- -
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Ar-15 to bullpup conversion
https://www.facebook.com/FaxonFirearms/photos/pb.175993945871045.-2207520000.1430374289./562893493847753/? type=3&theater
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Ar-15 to bullpup conversion
https://www.pinterest.com/pin/98797785549992997/ Check out this 3D-printable Bullpup for AR-pattern uppers (http://www.guns.com/2014/05/25/check-out-this-3dprintable-bullpup-for-ar-pattern-uppers/ ) --- "The Faxon ARAK really is the perfect centerfire upper for the Hanuman lower. The
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Ar-15 to bullpup conversion
big, easy reason is that it doesn't use a buffler assembly. . . . The flattop receiver can be covered with rail panels for comfort . . ." -- -
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Ar-15 to bullpup conversion
(Troy 6.2" Rail Covers, shown above, for example) And, Faxon Firearms is presently working on Ejection Port cover s. I can't w ait to see their upcoming Bullpup Lower !!!
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Ar-15 to bullpup conversion « Last Edit: April 30, 2015, 05:44:14 PM by SHORT-N-SASSY »
908ssp Member Offline Posts: 151
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Re: Ar-15 to bullpup conversion « Reply #71 on: March 04, 2015, 12:43:46 AM » Quote from: SHORT-N-SASSY on March 02, 2015, 12:32:06 AM Quote from: 908ssp on March 01, 2015, 11:50:07 PM . . . Delrin is pretty stiff more than your typical nylon. It machines really nice and leaves and very attractive finish.
Indeed. Delrin was my choice for experimental sabot ammunition, back in the 1 970s - -908ssp, A couple questions: What's the weight of your Delrin lower, complete with trigger- to-sear linkage intact? What's the overall length of your ARAK-21 upper-1 6" barrel assembly (fr om back end of upper, to muzzle end of barrel, not including flash hider? Thanks! I haven't weighed it without the upper, sc ope and flash light. I t hink is was around 8 lbs but I'll have to weigh it again. It is 26.1" without the comp. Logged
908ssp Member Offline Posts: 151
Re: Ar-15 to bullpup conversion « Reply #72 on: March 04, 2015, 12:49:03 AM » Quote from: SHORT-N-SASSY on March 03, 2015, 07:25:10 PM
And, under t he heading, A picture is worth a thousand words -- https://www.facebook.com/FaxonFirearms/photos/a.181309312006175.44583.175993945871045/562893493847753/? type=1&theater Check out this 3D-printable Bullpup for AR-pattern uppers (http://www.guns.com/2014/05/25/check-out-this-3dprintable-bullpup-for-ar-pattern-uppers/ ) --- "The Faxon ARAK really is the perfect centerfire upper for the Hanuman lower. The big, easy reason is that it doesn't use a buffler assembly. . . . The flattop receiver can be cov ered with rail panels for comfort . . ." -- (Troy 6.2" Rail Covers, shown above, for example) And, Faxon Firearms is presently working on Ejection Port covers. I can't wait to s ee their upcoming Bullpup Lower !!!
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Ar-15 to bullpup conversion
I don't understand this printable lower. Someone posted t hat a couple weeks ago and t he page isn't new. I also emailed with someone I think said they printed either it or another lower and it was not a working lower. I might just be mixing things up but to say here you print this lower and not s how a f inished plastic lower just a c omputer render... well it screams fake. I want to s ee the lower not some more drawings. Logged
SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #73 on: March 04, 2015, 12:52:29 AM » Quote from: 908ssp on March 04, 2015, 12:43:46 AM ... I haven't weighed it without the upper, scope and flash light. I think is was around 8 lbs but I'll have to weigh it again. It is 26.1" without the comp.
Thank you.
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SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #74 on: March 04, 2015, 01:33:19 AM » Quote from: 908ssp on March 04, 2015, 12:49:03 AM ... I don't understand this printable lower. Someone posted that a couple weeks ago and the page isn't new. I also e mailed with someone I think said they printed either it or another lower and it was not a working lower. I might just be mixing things up but to say here you print this lower and not show a finished plastic lower just a computer render... well it screams fake. I want to see the lower not some more drawings.
908ssp, Like y ou, my ex perience has been with tr aditional machining of metals and plastics, not printing parts. Never theless, I find the concept of a printable Lower Receiver intriguing, on a number of counts. Moreover, from the numerous examples shown on the Internet, I chose the white/see-through example shown on this Page, not only because it details the basic functionality of the moving parts, but also, because it best repre sents the minimal shape, size necessary to work, efficiently, with the ARAK-21 , ARAK-31 Upper Receiver assemblies. And, I hope the respective Bullpup Lowers that finally emerge from Fax on Firearms ar e not too dissimilar. Lastly, it's an exciting time to be a Bullpup Enthusiast -- - and, my hat off to Bob Faxon for joining the Bullpup Revolution! Logged
908ssp Member Offline Posts: 151
Re: Ar-15 to bullpup conversion « Reply #75 on: March 05, 2015, 12:50:24 AM »
Hey S-N-S if you see a pict ure of a a real printed working lower please link it here. I haven't seen one. I c an appreciate t he CAD drawings don't get me wrong. If I c ould afford a plastic printer I'd make use of it t hat is not the issue. My issue is I think this printable lower is only real on the internet. Where is a test of a finished working gun? Logged
12/12/2017
Ar-15 to bullpup conversion
SHORT-N-SASSY
Re: Ar-15 to bullpup conversion
^ Bullpup Fanatic Offline Posts: 1,805
« Reply #76 on: March 05, 2015, 02:49:53 AM »
908ssp, Now, I've heard of 3D-printing of plastic parts, in the past, but what piqued my interest was a Post on the Faxon Firearms Facebook Page (https://www.facebook.com/FaxonFirearms/posts/500280346775735:0?_rdr) I came across about a month ago, in the course of researching the upcoming ARAK-31 (http:// bullpupforum.com/index.php?topic=6146.msg75240#msg75240). In short: I envisioned a similar compact, lightweight Bullpup Lower Receiver for the ARAK-31 -- - with a 20" barrel, chambered for the 6.5mm Creedmoor cartridge! Re your request for a test of a finished working gun, some quick research turned up these videos: 3D printing an AR15 Lower receiver (http://youtu.be/6oJ9Bgj6m0I); DefDist Printed AR Lower - Part II I (http://youtu.be/tAW72Y_XPF4 ). Logged
908ssp
Re: Ar-15 to bullpup conversion
Member Offline
« Reply #77 on: March 06, 2015, 12:30:17 AM »
We must not be speaking the same language. I have seen the printed AR lowers. I have not seen a printed bullpup lower.
Posts: 151 Logged
SalsaShark037
Re: Ar-15 to bullpup conversion
Member Offline
« Reply #78 on: March 17, 2015, 05:55:55 AM »
908ssp,
Posts: 27
I have printed the Hanuman AR-15 bullpup lower. Sadly I didn't get any pictures while out shooting, but it works with my ARAK-21. I printed it with a 3" extension on the butt to s atisfy the 26" overall length requirement. It is designed to be printed and easily assembled with even the smallest printers, so it involved gluing a bunch of small parts together. ABS isn't an easy thing to get to adhere well. At least I had trouble with it. The biggest issue that it has is that being designed for ease of construction, it doesn't function perfectly. The trigger linkage has a lot of friction, so even with my 4.5lb trigger in the back, this thing pulled like a 7 or 8 pound trigger. Moreover, being ABS plastic, it had to be designed really thick to be strong enough. I imagine nylon to be a better choice. Not much else is possible with FDM printers. I plan on doing some editing to the CAD file to get it more the way I would like it. I'm going to borrow your trigger linkage design, as I feel it should work better. I also want to extend its length of pull. I would love a CNC milled lower, but sadly my skills and funds don't really allow for that kind of machining. « Last Edit: March 17, 2015, 06:02:09 AM by SalsaShark037 »
SHORT-N-SASSY ^ Bullpup Fanatic Offline Posts: 1,805
Re: Ar-15 to bullpup conversion « Reply #79 on: March 18, 2015, 04:30:03 AM »
SalsaShark037,
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12/12/2017
Ar-15 to bullpup conversion
Welcome to our Bullpup Forum! I commend you on your frontiersmanship. Please post a photo of your ARAK- 21- Hanuman Bullpup, along with the weight. And, I look forward to a v ideo of your home-made Bullpup in action, in the future. Thanks. Logged
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