Amazon.comAn adjustable sight helps dial in your firing accuracy. The Crosman M4-177 pneumatic pump air rifle is based on the increasingly popular AR platform, with multiple Picatinny rails for customizing with preferred accessories. A rifled steel barrel accurately shoots both pellets and BBs, and variable pump action is easy to use for both right- and left-handed shooters. Two aperture sizes on the rear sight let you simply flip up the small one for stationary or bullseye targets, and the large one for moving or larger targets.FeaturesBolt action, multi-pump power source Rifled steel barrel 350-round BB reservoir Adjustable stock to fit every shooter Loop slots for adding a gun sling Windage and elevation adjustments Adjustable and removable front and rear sights Includes a Firepow\'r five-shot pellet clip Removable magazine stores pellet clip and sight adjustment tool Crossbolt safety triggerSpecifications0.177 caliber 34-inch total length Three-pound, nine-ounce weight Firing velocity up to 625 feet-per-second (FPS) with pellets, and 660 FPS with BBsWarrantyAll Crosman products are warranted against defects in materials and workmanship. Details are included with your purchase.About CrosmanIn 1923 in Rochester, New York, Crosman was founded as Crosman Arms Company. From its inception, Crosman\'s principal products were airguns and airgun ammunition. During the 1950s, new accounts included Sears Roebuck & Co., Montgomery Ward, and Western Auto, all of which sold Crosman\'s products under their respective brand names. In 1966, the company introduced its own Crosman brand airgun, the Pumpmaster 760, which has sold more than 11 million units to date. Crosman Corporation is now an international designer, manufacturer, and marketer of Crosman pellet, BB, airsoft rifles and pistols, Copperhead ammunition, and Benjamin pellet rifles and ammunition.Product DescriptionThe Crosman M4-177 is the next great variable pump air rifle. With easy-to-use variable pump features you can control your power from 350 fps to 700 fps for everything from plinking to pest control. This tactical-styled repeater shoots BBs or .177-caliber pellets and comes with a dual-aperture rear sight and adjustable post front sight to help you stay on target. Offering a rifled steel barrel with crossbolt safety and adjustable stock to fit every shooter. Take It Outside with Crosman.