SilencerCo SCO15 AR-15 Stripped Upper Receiver Mil-Spec 1913 Picatinny Rail Type III Hard Anodize 7075 Aluminum Black AC5065. It features a mil-spec 1913 picatinny rail and M4 feed ramps. Additionally it is compatible with mil-spec forward assists...
SilencerCo SCO15 AR-15 Stripped Upper Receiver Mil-Spec 1913 Picatinny Rail Type III Hard Anodize 7075 Aluminum Black AC5065. It features a mil-spec 1913 picatinny rail and M4 feed ramps. Additionally it is compatible with mil-spec forward assists...