The GAMO WildCat Whisper pellet rifle features the IGT (Inert Gas Technology) piston that allows higher velocity, less vibration and a longer lifespan than traditional spring powered airguns. It also features the Whisper noise dampening technology, patented by GAMO.Specifications and Features:Action Type: Break BarrelAirgun Caliber: 22 CaliberAmmunition: PelletBarrel Length: 18 InchesBarrel Type: Rifled BoreCapacity: 1Cocking Effort: 30 PoundsMaximum Muzzle Velocity: 975 Feet Per SecondOverall Length: 46 InchesPower Source: Gas PistonScope Mounted: NoScope: 4x32mmStock Color and Material: Black Synthetic