"The Barra Airguns Exterminator 4"" CO2 Air Revolver features an all-metal design with a comfortable polymer grip. The heavy weight and balance feel incredible in the hand. Powered by a CO2 cartridge, the Exterminator is a true, 6-shot revolver that sends rounds downrange up to 410 FPS. Add more precision to your shooting with the fiber optic rear sight. If you want to take it a step further, add a pistol scope of your choice to the top-mounted Picatinny rail that is already attached to the revolver. Take note of the under-mounted Picatinny rail where you can add a light or laser and enhance the experience even more. BBs load into the metal cartridges for a realistic feel to this wheel gun. The exterminator fires both BBs and pellets. Pellet cartridges not included. 4"" barrel CO2 powered Up to 410 FPS Fiber optic rear sight Top- and bottom-mounted Picatinny rails Fires BBS and Pellets All-metal construction"