Fast Loading System & Smart Valve Piston, 3 " chamber Glossy finish receiver & barrel. Black anodized air craft alloy receiver with 11 mm groove for scope mounts. Black synthetic stock with rubber inlays for better control & feel. Rubber butt pad for recoil absorption & 3 stock spacers to extend stock length of pull. Capability of firing both 76 mm and 70 mm shells of 7/8 oz (24 gr) shot load to heavy 2 oz (57 gr) load magnum shells. Nickel-chromium-molybdenum steel barrel. Outside black hard chrome finish and inside white hard chrome finish. Proof tested for 1200 kg/cm² (17160