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Posted: 3/25/2005 10:19:14 AM EDT
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Hope this is the correct forum. I recently finished a AR Pistol with a 10.5 barrel and carbine buffer system. It is running with a Bushmaster bolt and carrier from my 20 inch XM15. The bolt and carrier and XM15 have never missed a beat in many many rounds. With my pistol, I had one failure to extract today, with Winchester value pack 55 fmj's. I have been playing with buffers, and the gun will run great with a 9MM buffer and M193. It short strokes with the 9mm buffer and the Winchester ammo. I put the standard weight Car buffer in today, and got the one failure to extract. I know that I could go with a Defender kit and probably cure the failure, but I am wondering if something else is going on. The rim was not pulled through, the extracter looks to have just slipped off. Is this a sign that the pressure's might still be a bit high at the point the bolt tries to unlock? I am thinking that I would like to address this issue with buffer adjustment, to make sure there are no pressure issues involved. Does this make sense, or should I just increase the extracter tension? Thanks, Craig |
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