DealThis assembled C7 style A1 upper receiver comes complete with a rear sight, ejection port cover and teardrop style forward assist. A perfect solution for replacing a worn A1 receiver or a retro build project. Made from 7075 T6 aluminum that has a Type III hard coat anodize finish, this upper is sure to provide you with years of dependability. from Windham Weaponry (Product URA-A1-M4) |