ZEV Technologies Forged AR-15 Upper Receiver comes stripped and ready for your next custom AR build. The upper features a laser T marked Picatinny rail and M4 feed ramps with a standard cut. It is constructed of high-quality 7075 T6 aluminum with mil-spec dimensions and a black hardcoat anodize finish. NOTE: Requires a dust cover, forward assist, charging handle, barrel, handguard, gas block, muzzle device, gas tube and BCG (Bolt Carrier Group) to complete.