Black Rain Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha. 56 NATO 7075-T6 Aluminum Black Ha - Black Rain's Spec15 Complete Upper Receiver has a black hardcoat anodize finish. Specifications for Black Rain BROSPEC15UR Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha: Manufacturer: Black Rain Ordnance Caliber: 5.56x45mm NATO .223 Remington Muzzle Device: A2 Flash Hider Finish: Black Hard Anodize Color: Black Fabric/Material: 7075-T6 Aluminum Gun Model: AR-15 The Black Rain BROSPEC15UR Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha is a quality addition to the Black Rain Ordnance lineup. For more great deals on AR15 Upper Receivers by Black Rain Ordnance please browse our Black Rain Ordnance Gun Parts page. What firearm models does the manufacturer say Black Rain BROSPEC15UR Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha is compatible with? The manufacturer says that Black Rain BROSPEC15UR Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha is compatible with AR-15Black Rain BROSPEC15UR Spec15 223 Remington/5.56 NATO 7075-T6 Aluminum Black Ha