Lewis Machine & Tool L7D1 AR-15 5.56 14.5" Flat-Top Barreled Upper Receiver

Standard flat-top upper receiver with 14.5 chrome lined 1:7 twist 5.56 barrel. Meeting todays military specifications, the L7D1 is a common equivalent to the upper delivered on the US M4A1 5.56 carbine. The upper receiver itself features mil-spec picatinny rail slots and M4 feed ramps designed to aid in reliable feeding during full auto use. Comes equipped with forward assist, port door, sling swivel, front sight post, and gas tube installed. Utilizes the mil-spec barrel nut and delta ring assembly to affix the barrel. Specifications: Barrel Length: 14.5 in / 368 mm Barrel Material: Chrome Caliber: 5.56x45 Color: Black Operating Method: Direct Impingement Rifling Twist Rate: 1:7" Please NOTE: Handguards, charging handle and BCG not included.