Crosman Model 664 SB Short stroke, high compression pneumatic system on this silver and black gem of a rifle means you get superior performance with less pumping effort. Power is variable depending on the number of pumps; ten pumps provides up to 680 fps with magazine loaded pellets or 645 fps with magazine fed BBs. Features in-clude black Monte Carlo stock with raised cheekpiece, plastic buttplate, grip cap with distinctive white line spacers, brushed aluminum four power scope, ladder adjustable rear sights with fiber optic front blade sight, manual safety, metal receiver with rifled steel silver finished barrel. Pellets load with 5-shot manual clip; BBs load with an internal, 18-shot, gravity fed magazine. Requires assembly. pump pellet gun