Black Rain Ordnance Upper Receiver 5.56 Black

Black Rain Ordnance Upper Receiver 5.56 Black. 56 Specifications for Black Rain Ordnance Upper Receiver 5.56: Manufacturer: Black Rain Ordnance Color: Black Finish: Anodized Caliber: 5.56x45mm NATO Gun Model: AR-15 Package Contents: Black Rain Ordnance Upper Receiver 5.56 Which weapon models is Black Rain Ordnance Upper Receiver 5.56 compatible with? Black Rain Ordnance Upper Receiver 5.56 is compatible with AR-15Black Rain Ordnance BRO-SPEC15-URC: Upper Receiver 5.56 Black