Caliber: 0.177; Action: 10X Quick- Shot technology enables you to shoot up to ten pellets without reloading. Single cocking system.; Powerplant: IGT Inert Gas Technology gas piston.; Trigger: Two stage trigger.; Safety: Manual safety and automatic cocking safety system.; Ammunition: Any .177 Cal. Pellet.; Barrel Length: 19.1 in.; Velocity: 1,300 feet per second (fps) with PBA Platinum.; Noise Dampening: WHISPER; Rail: GAMO standard 11 mm aluminum rail.