Inertia fed. Market leading design. Introducing the third generation of Gamo's exclusive rapid-reload technology. This patent-pending 10X GEN3i technology features a sleek and stylish design combined with our horizontal inertia fed magazine integration. The magazine indexes using the inertia force from the recoil of the air rifle-creating a smoother and more precise breech loading process. This is Gamo. This is state-of-the-art rapid-reload technology. The IGT Mach 1 33mm cylinder power plant allows it to deliver next-level power with 1,650 fps in .177 caliber.Features :.177 Cal1,650 FPS2-Stage Adjustable TriggerWhisper Fusion Noise DampeningGAMO 3-9x40 air rifle scope with rings