5.56 NATO - Frontier 62GR FMJ - 20 Rounds Condition One Modular Mount contained workspace that keeps your

contained workspace that keeps your items in one enclosed area

and black nitride-coated for unmatched durability and long service life

These features add reliability

25 Degrees of Cant Adjustment

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers

5.56 NATO - Frontier 62GR FMJ - 20 Rounds Condition One Modular Mount contained workspace that keeps yourFrontier(R) Cartridge features Hornady bullets in 223 Rem and 5. 56 NATO. Applications range from plinking, target shooting and hunting to law enforcement training and self defense. Features : 556 NATO 3,060 Feet per second 62 Grain full metal jacket Frontier 20 Rounds per box