I posted this in my "build thread" but want to bring it out to clear some things up. My bolt will not go back far enough to have the bolt catch engage the face of the bolt. The rifle will fire and cycle with out a problem it just won't lock open on an empty mag. Test firing was with a 20 round magpul mag loaded with 5 rds. Parts are as follows: Aero upper/lower set Aero BCG DPMS stock set: http://www.buckeyetactical.com/dpms-buttstock-assembly-6-position-collapsible-lr-308-ar-15-car
