Crosman 2300S air pistol Uses 12-gram CO2 cartridges Bolt-action Single-shot Lothar Walther rifled steel barrel Stainless steel bolt has longer handle for easier operation and extended bolt probe for increased accuracy Fixed front post sight attached to aluminum muzzle weight Metal Williams rear sight is fully adjustable (has positive clicks and target knobs) 11mm dovetail grooves ~60 useful shots per CO2 cartridge 2 power levels (high=520 fps, low=440 fps) Adjustable trigger-pull (1 to 4 lbs.) and over-travel adjustment screw Textured grips with thumbrests on both sides Manual safety