Gamo Whisper Fusion Mach 1 air rifle IGT MACH 1 gas piston (IGT=Inert Gas Technology) Breakbarrel Single-shot Velocities up to 1420 fps in .177 caliber w/PBA Platinum ammo Fixed fiber optic front sight Fully adjustable fiber optic rear sight 11mm scope rail Whisper Fusion double-integrated noise dampener (reduces report by 89.5%) Rifled steel bull barrel Fluted polymer barrel jacket SWA (Shock Wave Absorber) recoil pad reduces felt recoil by up to 74% All-weather ambidextrous stock with black rubber inserts on grip & forearm Raised cheekpiece Custom Action Trigger (CAT) independently adjustable 1st and 2nd stage, allows you to tailor you trigger Automatic cocking safety system Manual safety Recoil Reducing Rail maximizes scope lifespan with 99.9% recoil compensation Includes 3-9x40 scope Optics Features: 3-9x magnification 40mm objective lens 1" tube 30/30 reticle with fine crosshairs, perfect for target acquisition 40 ft to 12 ft field of view 3.5" eye relief 21.6 oz 13.5" long Fogproof Shockproof Waterproof Includes lens caps Benefits of the IGT MACH 1 over a metal mainspring: Large cylinder delivers more velocity and terminal penetration Smoother cocking and shooting Increased precision and speed Less vibration No spring fatigue, even if you leave it cocked for hours Functions perfectly in cold weather Lasts longer than a metal spring Whisper Fusion sound suppression The Gamo Whisper Fusion Mach 1 features the Whisper Fusion sound moderator. Pellets travel through two different chambers that combine to compress and prevent noise expansion, resulting in the quietest Gamo powerplant available.