Bushmaster 16” Carbine-Length upper(Flat top with no carry handle) Factory Complete with bolt carrier group and charging handle included. I am the original purchaser. Has MagPul carbine length hand guard. Upper in excellent condition had probably 1,200 rounds through it. Barrel is marked 5.56 Nato 1/9. I can e-mail pictures to whomever would like them. $375 Only trades considered for factory 9mm, .308, 7.62X39, .223, or .38 special ammo.