The AR-15 stripped upper receiver is one of Aero's most popular products. Forged from 7075-T6, this stripped upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps. Match this upper with one of the Aero AR-15 lower receivers for a solid and dependable fit. Features M4 feedramps, .250 takedown pin holes, and laser engraved T-Marks. AR-15 stripped upper receiver in Anodized black. Made in America. NOTE: Requires dust cover, forward assist, charging handle, barrel, handguard, gas block, muzzle device, gas tube and BCG (Bolt Carrier Group) to complete.