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16″ 5.56 Barreled-Upper Receiver
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. Handguards, charging handle and BCG not included.
16 in / 406 mm