Apparently jumped into the deep end first off. Got an 80% DPMS from 5D and it milled out just fine, but no matching uppers available. Got a slick sided upper (no forward assist) from Next Level arms and it mates with barely a wiggle and a hairline gap. I assembled the upper with a 20” Ballistic Advantage heavy profile barrel with a rifle length gas port, Seekins Precision adjustable gas block, AeroPrecision gas tube and torqued the barrel to 50 lbs after lapping the upper. The bcg is AeroPrecision machined for forward assist and the buffer and spring are Luth-AR AR rifle buffer and spring in an A2 rifle buffer extension tube. It fires and ejects TulAmmo .308 150grain with no problems but hangs up when attempting to feed from the magazine, sometimes from bolt hold open and always when attempting to cycle after firing. I’m at a loss in what to remedy, but am learning that the fitment of upper and lower should probably be better. Should I go looking for a Next Level arms lower or try and wait out for 5D upper? Also what other steps do I need to take to get this rifle to be what it can?
