Sig MCX CO2 gun with 21 inch barrell and faux silencer patterned after Sig MCX 5.56. .177 caliber 30 round magazine operates with 90 gram CO2. Muzzle velocity 700ft. Length 34.75 inches and Red Dot sighting system . Comes with original box, 2 CO2 cannisters, pellets-NEVER FIRED!!