The Umarex Throttle Air Rifle features the vibration reducing StopShox system. StopShox is a patent-pending, innovative device specifically designed to absorb shock, vibration and recoil in air rifles. It works in conjunction with a floating action to create a unique combination that systematically reduces the shock created by a break barrel air rifles spring or gas piston power system. The Throttle .22 Air Rifle comes with a black all weather synthetic stock and an ambidextrous thumbhole stock. Also provides fiber optic sights, a metal Picatinny scope rail, and an automatic safety.