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Posted: 9/20/2015 10:22:42 PM EDT
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I built a pair of 7.62x39 's, 7.5" and 16". The 16" is running flawlessly, but I took the 7.5" out to test at the range today and it gave me the blues.
I'm running a Spike's T2 buffer and standard spring with an adjustable gas block. I was running single rounds in the mag trying to get the gas adjusted to lock back on empty. I went from all the way closed to all the way open, about midway through I started to get consistent ejection but never got the bolt to lock back on empty. It was moving back enough to reset the trigger though. I've got some extra bcm o-ring and springs so I will throw a set on the bolt to help with extraction. But what next? Lighter buffer? |
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Quoted:
I had 4 of the 7.5" Radical barrels. Each one had to be opened up a tad to get it to run 100% using Red Army Standard Ammo. If I soaked the BCG in oil, it would run, but after I opened up the gas port, and tried with a moderate amount, they all ran perfect. Thanks for the info. I'm still rather new to tuning AR's but I felt like I was heavily undergassed. Do you know what size you ended up with? I don't really have the resources to make multiple trips to the range to step up each diameter and I don't think the range will let me bring my portable drill in. However I just might try to, the worse they can do is tell me I can't use it. |
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