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4/3/2017 1:53:13 AM EDT
Greetings gents,

I will condense a long story.

I pieced together a maten a while back and finally got around to actually shooting the damn thing a while ago. I encountered some issues, mostly with bolt hold open, and it not clambering/locking when feeding from magpul mags. I live in Colorado, so new mags are not exactly something I can try. Here's a list of parts-

Magpul ar10 prs and supplied tube
Aim bolt
Rainier .308 ultramatch
Slr adjustable gas block
Magpul pmags
Rifle length buffer/buffer spring

Now, in regards to the hold open, the bolt was being held back by the BHO on the magazine follower. Any movement of the rifle would cause the bolt to then go home, and it was causing some damage to the follower in the mag as well. There was simply not enough travel distance with the rifle length buffer to allow it to lock back on the actual bolt catch.

To help with the feeding issues, I bought a wolf extra power spring, and when I replaced that, I also popped a carbine sized buffer in for kicks. With the carbine buffer, re bolt locks back flawlessly, but the charging handle does contact the cheek piece on the stock. There is enough travel that the bolt is reciprocating far enough to strip a round/hold open.

My question to you all is, is this going to cause an issue, using a carbine buffer in an otherwise rifle extension set up? I think with the additional travel, this may solve some of my feeding issues as well. I just don't want to head to the mountains and have some crazy issues from this, even though both buffers weigh almost the exact same. AR10's are fucking weird.


Thanks, gents.
4/3/2017 1:58:36 AM EDT
[#1]
Do NOT use a carbine buffer.

You fire one round, that carrier is slaming into the upper/lower receiver, and causing damage.

Your travel is limited by metal to metal contact with the carrier and the lower receiver.  Bad juju.


Your problem is you have a "rifle" buffer originally, and not the proper length "AR10 buffer" which is shorter.



You had the wrong parts, and you changed it to more wrong parts.

Get the right parts.

You need a DPMS AR10 buffer, with a DPMS AR10 spring.
4/3/2017 3:04:06 AM EDT
[#2]
Tracking.

However, after looking at midway and primary arms, the DPMS .308 rifle buffers show the same 5.25 length as the ar15 rifle buffer that I currently have in there? I will break it all out tomorrow and verify lengths
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