Benjamin Marauder PCP Air Pistol (.22) Shoots .22 caliber pellets up to 700 FPS Pre-charged pneumatic with integrated pressure gauge Interchangeable shoulder stock included. With 3000 psi of compressed air this gun has the muscle to quietly and dependably get the job done Bolt action with 8-shot magazine, two-stage trigger and internal noise-dampening shroud Ideal for small game hunting The BP2220 may be filled from a high pressure tank (bottle). Scuba style tanks designed for 3000 psi pressures and above are best suited for the task as they can fill the BP2220 many times to 2500-3000 psi