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The Gamo Swarm Viper 10X Gen3i is a break-barrel .22 pellet rifle with a 10-shot inertia-fed magazine that indexes itself from the rifle's recoil, so you break the barrel, load a pellet and fire without handling a pellet for each shot. It runs on Gamo's IGT gas piston rather than a steel spring, which gives steadier power and less vibration, and it comes with a 3-9x40 Gamo scope on a recoil-reducing rail. The Whisper Maxxim baffle system and rubber-gripped synthetic stock make it a quiet, comfortable rifle for pest control and target practice. Against single-shot break barrels it trades some simplicity for much faster follow-up shots; against PCP rifles it avoids tanks and pumps but has heavier, springer-style recoil and a stiffer cocking stroke.
In stock
Owners rate the Swarm Viper highly, praising the self-indexing magazine, the quiet report and the gas piston's smooth shot cycle. Complaints center on the stiff cocking effort and on the magazine occasionally failing to index with poorly fitting pellets.
The Gamo Swarm Viper 10X Gen3i is a .22 caliber break-barrel pellet rifle that comes with a 3-9 x 40 Gamo scope. It uses the third generation of Gamo's 10X Gen3i system, a 10-shot horizontal magazine that is inertia-fed. The recoil's inertia indexes the magazine automatically, so you break the barrel, load and fire for quicker follow-up shots.
The rifle is powered by an IGT (Inert Gas Technology) gas piston, which delivers steady power with less vibration. Whisper Maxxim noise dampening channels the pellet through two chambers to reduce noise. The Custom Action Trigger (CAT) is a two-stage adjustable trigger. The Recoil Reducing Rail is designed to compensate for 99.9% of recoil and help extend the life of the scope.
The stock is automotive-grade synthetic, with rubber grip inserts on the forearm, grip and cheekpiece. The rifle shoots up to 1,000 fps with .22 caliber alloy pellets and is intended for pest control and hunting.















