It is a live freee armory receiver set with a 18” bsf barrel ,mid length gas system ‘with a aero m5 carbine buffer tube kit. Before I put the adjustable block on every two or 3 rounds a stove pipe jam wouls happen I figured it was a over gas but even wen I fined tuned it still had same issues and the bolt wouldn’t always lock Back after tunneling it I don’t have any pictures of jam but here’s the rifle. Also my bcg is a toolcraft . Every thing seems to be working as it should except for the ejecting process