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 4x32 shockproof scope with rings.