Looking to build a high-quality retro looking AR. Start your project with a complete A1 upper receiver anodized. Comes with the standard features of a Mil-Spec upper receiver and is forged from 7075-T6 aluminum with a black hard coat anodized, tough finish. The A1 carry handle includes A1 adjustable rear sight, and perfect for building a retro M16A1E1, M16A2 Carbine Model 723, or a Model 733 Commando. The upper has a shell deflector and tear drop forward assist and dust cover. The C7 style carry handle allows mounting a scope from the era for a retro look. This upper does not have M4 feed ramps in keeping with the military A1 uppers. Use with any Mil-Spec lower receiver. Features: A1 rear base sight assembly (UR-21A) Ejection port cover assembly (UR-05A) Teardrop forward assist assembly (UR-08T) 7075 T6 aluminum Black hard coat anodized finish