The Gamo P-900 IGT air pistol delivers impressive performance with 400 fps velocity using .177 caliber PBA Platinum Pellets. Unlike most air pistols this model features Inert Gas Technology (IGT) with a break barrel action instead of CO2 power for consistent reliable performance.Gamo P-900 IGT Air Pistol.177 caliber pellet compatibility400 fps muzzle velocityInert Gas Technology (IGT) gas piston systemBreak barrel action for improved accuracy and durabilityWindage adjustable rear sight and fiber optic front sightRifled steel barrel for enhanced precisionManual safety mechanismTextured rubberized ambidextrous gripPerfect for target shooting and training this air pistol provides steady consistent power while reducing vibration for improved accuracy and enhanced shooting experience.