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 Whisper noise dampening technology, patented by GAMO.Specifications and Features:Action Type: Break BarrelAirgun Caliber: 177 CaliberAmmunition: PelletBarrel Length: 18 InchesBarrel Type: Rifled BoreCapacity: 1Cocking Effort: 30 PoundsFinish: MatteMaximum Muzzle Velocity: 1200 Feet Per SecondOverall Length: 46 InchesPower Source: Gas PistonSafety: ManualScope Mounted: NoScope: 4x32mmStock Color and Material: Black SyntheticStock Type: AmbidextrousTrigger Type: Two Stage AdjustableWarranty: 1 Year Factory Warranty