Lewis Machine & Tool (LMT) AR-15 5.56 NATO Flattop Stripped Upper Receiver - 16"

Standard flat-top upper receiver with 16 chrome lined 1:7 twist 5.56 barrel. Comes 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 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.