The GAMO Swarm Whisper pellet rifle features 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 (Inert 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 1″300 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 4×32 shockproof scope with rings.