This an AR style PISTOL upper only in 7.62 x 39. This can not go on a rifle lower with a stock! If you are not sure of the details around short barreled uppers, contact your gunsmith or FFL. Was used for testing of the barrel, which went well. It has a 7.62x39 1:10 barrel that is 10.5inch long and has an integrated muzzlebreak, functional. It has a dsa upper receiver with feed ramps ala m4. Charging handle included. Free floating quad rail, aircraft aluminun with a hard anodize coating. dual railed aluminum hard anodized gas block. $600 with bolt and mag, no Carrier. (make offer) $720 with BCG and mag. I can do cash or SQUARE (debit/cc). I have the lower, and if a long standing member with good rep is interested they may contact me.