The GAMO Swarm Whisper pellet rifle features the 10X Quick-Shot patent pending technology that utilizes a 10-round rotary-style magazine providing faster loading for repetitive shooting. This air rifle also features the IGT (Intert Gas Technology) piston that allows higher velocity less vibration and a longer lifespan than the traditional spring-powered airguns. The GAMO Swarm Whisper also features the well-known patented Whisper noise dampening technology. Features: Up to 1300 fps (.177 Cal.) using Gamo PBA Platinum pellets IGT (Inert Gas Technology) piston Whisper noise dampening technology two-stage trigger single cocking break barrel automatic cocking safety system manual trigger safety fluted polymer jacketed steel barrel and a 4A-32 shockproof scope with rings.