I’ve let my AR sit unattended for literally a couple of years while devoting all manner of range time to handguns. The recent acquisition of a CAR-style upper receiver saw me finally take the AR along to the range recently. The lower on this gun is from a no-frills Bushmaster Patrolman’s Carbine; the upper an 11.5-inch barreled job with a permanently-attached 5.5-inch flash hider. A real rifleman (carbineman?) I ain’t, clearly - my 25-yard groups shown here may make you real rifle-folk on the Forum throw up a little bit in your ammo cans. For me, this is darn good shootin’ for a long-gun haha. Zero issues with the marriage of this upper and lower, save when I managed to pack 21 or 22 rounds into a 20-round mag - the gun decidedly did NOT care for that. Smooth shooting otherwise. More to come as the range outings with the AR continue. Kinda thinking of snagging a PSA or other lower with a full buttstock to attach to the Bushy upper - we shall see.