PSA receiver, Daniel Defense 16" midlength barrel with factory-pinned gas block, 12" Daniel Defense Lite rail, Spike's Tactical BCG, BCM Mod4 charging handle. Approx 2k rounds down the tube. Started off as a DD complete upper without BCG/CH; this barrel and BCG have only ever been used with each other. Cannibalized the DD receiver a while back. Would be great for a truck gun.