The Drozd is made in Russia by IZH-Baikal. It uses a standard 12-gram CO2 cartridge and six AA batteries. There are three switches to operate the unique select-fire mechanism. The first one turns on the gun. The second one selects the firing mode: semi-auto (one shot with each pull of the trigger), three-round burst (full-auto) or six-round burst (full-auto). The third switch controls the burst rate: 300 rounds per minute, 450 rounds per minute or 600 rounds per minute. The gun comes with a detachable shoulder stock (increases length by 5.75"), scope rail, sights, one 30-round magazine and a BB loader. The magazine holds the ammo and the CO2 cartridge. This black Russian wonder is great as an all-day plinker. If you'd like to mount a pistol scope or red dot, that's easy enough with the 11mm dovetails. Ninety-day limited repair warranty on factory defects of the metal parts, and a 30-day warranty on seals. CO2 powered, .177 select fire BB gun. The pistol style magazine holds 30 BBs at a time and the CO2 cartridge. Cycle speed: 300 rds/min, 450 rds/min, 600 rds/min Intended for training and plinking with BBs. We recommend lead round ball