I have an oly arms ar that won't chamber a round off the mag. I had been using the lower for a different upper for ablittle while and I just put three oly upper and lower back together. I never had a problem before. When the bolt is locked open, insert mag, release the bolt, it picks up the round and rams it into the feed ramp where it is rather firmly jammed into the gap. It happened regardless of which side of the ramp is in play. I put the lower back on my bcm upper with bcm bcg and charging handle and had no problems. I put the oly back together and switched out the bcg to the one I know runs, same problem. Replaced the oly bcg and switched out the charging handle just to eliminate something else, same problem. So the lower and bcg run fine on a different upper. It looks like the tip of the round is just not sliding up the ramp, instead it's lodging in the gap. Oh yeah, I did all the above with 3 different mags and 2 different ammos, no change in the problem.
I know its another jammed ar thread but I'd appreciate any insight. Thanks.
I know its another jammed ar thread but I'd appreciate any insight. Thanks.