Description
CORE15® Receivers are High Quality Military Specification hammer-forged 7075-T6 Aluminum, Hard Coated Anodized Matte Black, .223/5.56 or Multi Cal. CORE15® Uppers are: CORE15® Mil-Spec Forged 7075 T-6 Aluminum M4 Upper Receiver with M4 Feed Ramps 1913 Picatinny rail flat top Hard Coat Anodize Type III Class II Black Finish Dry Lube Internal Finish Laser engraved T-markings