Gamo 611003865554 Swarm Magnum 10X Gen 3 Gas Piston 22 10rd Shot Black Black Steel Barrel Black Receiver Black All Weather Lightweight Thumbhole Stock Scope 3-9x40mmThe next generation Swarm air rifle features Gamo's most powerful technologies, the 33 mm cylinder and the IGT Mach 1, allowing it to deliver next level power with 1,300 fps in . 22 caliber; SWA (Shock Wave Absorber) Recoil pad with up to 74% recoil absorption and a non slip texture design on grip and forearm. That combined with our patent pending 10X Gen3 inertia fed technology and the Whisper Fusion technologies, makes the Gamo Swarm Magnum 10X GEN3