The all-new Swarm Viper 10X GEN3i delivers unprecedented speed, power and performance that's ideal for a variety of uses and disciplines. The Swarm Viper features an automotive grade glass filled synthetic stock with rubber inserts on the forearm, grip and cheek piece for an ultra-comfortable shooting experience. This next-gen adult air rifle includes the patent-pending 10X GEN3i Technology with our revolutionary new horizontal inertia fed magazine integration, making it lighter more compact and low profile. The magazine indexes using the inertia force from the recoil of the air rifle - creating a smoother and more precise breech-loading process. This air rifle features an automotive grade glass filled nylon all-weather stock, finished with premium rubber inserts for the grip, forearm and cheek rest. The .177 Caliber version of the Swarm Viper 10X GEN3i delivers 1,300 fps with alloy pellets.