The Only Semi Automatic Pellet Rifle in its Class Class is out or at least outside. With CO2 power and a 12-shot rotary clip you can put the maximum amount of lead down range in the least amount of time. And with its rifled steel barrel and windage adjustable fiber optic sights you can ensure that you hit your mark every time. The all-weather synthetic stock design assures years of rugged wear and tear that will keep your 1077 looking good as long as you own it. 400 consecutive shots at 625 feet per second are possible using the 88 gram AirSource cylinder. Specifications Airsource power source 0.177 caliber Firing velocity of up to 625 FPS Three-pound, 11-ounce weight 36.9-inch total length Rifled steel barrel Fiber optic front sight Rear sight adjustable for windage and elevation Cross bolt safety