Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper Receiver

Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper Receiver Looking for something to change up the standard AR-15 formula? This AR-15 Upper Receiver is compatible with a wide range of parts, so you can build your dream rifle. Features: Machined from billet 7075-T6 aluminum Hardcoat anodized Engraved T-marks and 1913 picatinny rail Increased wall thickness Precision cut carrier bore diameter .458 SOCOM sized ejection port No forward assist or dust cover M4 feed ramps Compatible with Mil-Spec lowers and parts Cross Machine Tool Co., utilizing the latest machining technologies, offers high quality products that you'll be excited to own. Cross Machine Tool is a veteran owned business that takes pride in manufacturing products you will own. CMT products exceed military standards, so you can build the best AR style rifle possible.