Includes Drozd BB pistol, 20-oz. bulk-fill CO2 tank and hose. The Drozd is made in Russia by IZH-Baikal. This one has been specially modified with a refillable 20-oz. CO2 tank that will shoot many HUNDREDS of shots before you have to put more CO2 in the tank! (Modification voids the warranty.) Spend less time (and money) on small CO2 cartridges and more time shooting. If you want to convert back to 12-gram CO2 cartridges, you can easily do that! 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 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. Because we have modified this gun to accept a bulk-fill tank, the manufacturer will not honor the warranty. Loudness: 3-Medium Weight: 5.65 lbs Barrel Length:10.00" Overall Length: 26.00" Capacity: 30 round(s) Barrel: Rifled Front Sight: Blade and Ramp Rear Sight: Adjustable for elevation Scopeable: Yes Trigger adj.: Two-stage non-adjustable Apprx. Trigger Pull: 2.50 lbs Buttplate: None Suggested for: Plinking & target practice Action: Semiautomatic/Full-auto Powerplant: CO2 Safety: Manual 1 Shot/Repeater: Repeater