This is a Gamo known as the Swarm Magnum chambered in 22PEL, model 611003865554.
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 1"300 fps in .22 caliber. That combined with Gamo's patent-pending 10X Quick-Shot and the Whisper Fusion technologies" makes the Gamo Swarm Magnum a revolutionary break barrel.
Features:
Caliber: 0.22
Action: 10X GEN2 Quick- Shot technology enables you to shoot up to ten pellets without reloading. Single cocking system.
Powerplant: IGT Mach 1 Inert Gas Technology gas piston (33 mm cylinder).
Trigger: Two stage independently adjustable CAT (Custom Action Trigger).
Safety: Manual safety and automatic cocking safety system.
Ammunition: Any .22 Cal. Pellet.
Barrel Length: 21.3 in.
Velocity: 1,300 feet per second (fps) with PBA Platinum.
Noise Dampening: WHISPER FUSION
Rail: RRR (Recoil Reducing Rail).