This is the next generation Swarm air rifle. It features Gamo’s most powerful technologies the 33 mm cylinder and the IGT Mach 1 allowing it to deliver next-level power with 1650 fps in .177 caliber. That combined with our patent-pending 10X Gen2 inertia fed technology and the Whisper Fusion technologies makes the Gamo Swarm Magnum 10X GEN2 a revolutionary break barrel. – Caliber: 177 – Velocity: 1650 feet per second (fps) with Alloy Pellets – Action: Upgraded Inertia Fed Technology. 10X Quick- Shot technology enables you to shoot up to ten pellets without reloading. Single cocking system. – Noise dampening: WHISPER FUSION – Powerplant: IGT Mach 1 Inert Gas Technology gas piston (33 mm cylinder) – Barrel: Metal jacketed rifled steel barrel. – Trigger: Two stage independently adjustable CAT (Custom Action Trigger). – Stock: Automotive grade glass filled nylon all-weather thumbhole. – Checkering: Non-Slip texture design on grip and forearm. – Recoil Pad: SWA (Shock Wave Absorber) Recoil pad with up to 74% recoil absorption. – Safety: Manual safety and automatic cocking safety system. – Optics: GAMO 3-9×40 air rifle scope with rings (shockproof fogproof) – Rail: RRR (Recoil Reducing Rail). – Warranty: 5 Year. – Weight: 6.88 lbs. – Length: 49.2 in. – Length of Pull: 15 in. – Ammunition: Any .177 Cal Pellets. – Trigger Pull: 3.2/2.6 lbs. – Barrel Length: 21.3 in. – Cocking Effort: 41 lbs.