10-03-2012, 07:18 PM
The upper is a standard AA 18" upper with the Lothar Walther barrel. The Bolt carrier group is the standard that came with the upper. The lower is a Rock River arms complete lower except for a Gieselle trigger group. Mags tried were everything that Midway sells in 6.5 grendel and even the original AA magazine. The buffer and buffer spring are standard mil-spec that came with the lower. I have not changed them out. I think that the adjustable gas block may be the problem but I lost the darn instructions on which way to adjust the little hex screw to get more gas thru the tube to push harder on the BCG. I have read other threads where guys have polished the small extractor plunger in the bolt face, but it always feeds the first round if it is locked back and you insert the magazine and fire the round, then it will not stripe off the next round. Change mags and let the bolt go home and it fires the first round and will not stripe off the next round. I am hoping that I do not need more than 1 round to kill what I am shooting, but if I wanted it this way I would have bought a bolt action.....