SPECIFICATIONS MATERIAL: CNC ALUMINUM COLOR: BLACK LENGTH: 12 INCH WEIGHT: 8.2 oz. / 0.51 lbs. FEATURES - UTILIZES CUSTUM BARREL NUT TO MATE WITH UPPER RECEIVER AND 2 ALLEN BOLTS TO SECURE FREE FLOAT RAIL - INCLUDES 5 x QUICK RELEASE SLING MOUNT POINTS - 12 KEYMOD HOLES ON LEFT, RIGHT AND BOTTOM OF RAIL FOR MOUNTING COMPATIBLE RAIL ACCESSORIES - MONOLITHIC RAIL ON TOP TO INSTALL CONVENTIONAL RAIL ACCESSORIES