Gamo Wildcat Whisper air rifle Inert Gas Technology (IGT) gas piston Breakbarrel Single-shot Shoots a .177 pellet at 1350 fps, .22 = 975 fps Whisper noise suppressing Technology reduces noise by 52% All-weather synthetic Monte Carlo stock Ventilated buttpad Manual trigger safety Steel jacketed, rifled barrel Includes 4x32mm scope Benefits of the IGT over a metal mainspring: Smoother cocking Smoother shooting No spring torque No spring fatigue, even if you leave it cocked for hours Functions perfectly in cold weather Lasts longer than a metal spring