4.5 inch AR-15 Non Reciprocating Side Charging 9mm Upper with a 4.5 inch Cold Hammer Forged 416R SS Barrel, 6 inch Keymod Rail and Slimline Flash Can. BCG optional. Charging handle is on the left side and is non reciprocating. Allows shooter to keep eye on target and finger on the trigger while recharging. All parts made in the USA.