One piece, steel mount provides a secure, stable scope base that won't shift between shots. Rock-solid, three-point mounting system attaches to the factory scope mount screw hole in the receiver and the charger guide dovetail, while the setscrew at the front uses the receiver ring as a stop to prevent forward movement. No drilling or tapping required; mounting hardware included. Machined from the same type of steel as the M14 receiver, so mount and receiver expand at the same rate as the gun heats up to help keep your optic zeroed during prolonged fire. Thirteen MIL-STD 1913 Picatinny cross-slots offer plenty of versatility in setting eye relief. Sight channel allows use of iron sights Mfg: Fulton Armory SPECS: 8620 steel, Parkerized, matte black finish. 5A 1/2" (14cm) long, 1A 1/2" (3.8cm) wide, 2" (5.1cm) tall. 11.6 oz. (329g) weight. All mounting hardware included. Minor fitting required.