Beeman Air Rifles SS1000T with 3-9x32 A/O scope. Two barrels come with this air rifle. One shoots .177-cal. pellets up to 1,000 fps, and the other shoots .22-cal. pellets up to 850 fps. Changing barrels is quick and easy. The two-stage, target-quality trigger breaks cleanly and enhances accuracy. This is a break-barrel, spring-pistonA type of airgun powerplant in which the air that propels the projectile is rapidly compressed at the moment of firing by a spring-driven piston. Also called spring-air. model with 35-lbs. of cocking effort. Ported muzzleThe end of a barrel where the pellet comes out. brake and rubber recoil pad on a hardwood stock. Automatic safety.Single Shot Adult