Dont know the exact specs.Try a different weight buffer. H2 or lighter.
Pictures of the buffer?
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Dont know the exact specs.Try a different weight buffer. H2 or lighter.
Pictures of the buffer?
Dont know the exact specs.
Looking online now at adjustable buffers. Seems to be the easiest solution. Unless its not. Either way it seems to be a good place to startDanKATL is correct. You can manipulate the bolt manually with no issues because your problem isn't mechanical...it's the gas system. Something is "out of balance". Either it's undergassed or the buffer is too heavy. The bolt isn't going all the way back, therefore not catching the next round (or not properly) and the last round bolt hold open isn't happening because it's also not going back far enough to catch the latch. I would say if you want to swap uppers around like you're doing, get an Odin adjustable buffer and then you could tune it for whatever upper you want at that particular time.
No stamp or marking anywhere on itWould need to see the face of the buffer. If nothing is stamped on it, it should be a 2.9oz carbine buffer.
If it's an H/H1 or H2, it should be stamped as such.
No stamp or marking anywhere on it