08-30-2015, 01:45 PM
usmcm16a2 Wrote:Montana,
The rifle would stove pipe, the shell would partially extract and the bolt would start to feed the next round. When I took the upper off and played with the gas system at the range I could get it to fire 3-4 rounds but the last shell would stay in the rifle and the bolt would be held back by the latch. I looked at some of the brass and the primers are showing pressure sign. 29.5gr of CFE223. A2
What do you mean by played with the gas system? M796rider is correct about messing up the rifles action when over gassed. If your rifle is over gassed it is an easy fix with an adjustable gas block. The heavier buffers are another plus for reliable cycling. I would also try one with Hornady factory ammo to eliminate any other problems. You may have another problem but I think M796rider's recommendation is the correct way to start.