The Iceman offers the versatility of using either single-action or double-action operation. The under-barrel, Weaver-style rail accepts most lasers and tactical lights. With its rifled steel barrel and easy to load 8-shot rotary clip, that fires either pellets or BBs at 430 fps. Whatever ammo is convenient or on hand, your Crosman Iceman CO2 gun can use it! While BBs may be your ammo of choice because they're very economical, your best accuracy will come when using lead pellets. You can get more accuracy (and up the coolness factor too) if you mount a laser on the accessory rail. Don't forget to stock up on High Grade Steel BB's!