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Gamo USA
The Gamo Swarm Viper 10x Gen3i .177 caliber air rifle with scope is a modern, feature-rich airgun built for hunters, pest control shooters, and backyard marksmen who want serious power without the noise and recoil hassle of traditional firearms. This semi-auto multishot air rifle combines speed, accuracy, and innovative engineering in one package, delivering 1300 fps velocity with alloy pellets and a lightweight, ergonomic platform that's built to last.
What sets the Swarm Viper apart is its patent-pending 10X Gen3i inertia-fed magazine system. The magazine auto-indexes using the recoil force from each shot, so there's no manual loading between rounds—just point, shoot, and the next pellet is ready. That means faster, cleaner shooting with less fuss, plus the design keeps the rifle compact and low-profile without sacrificing balance or handling. The two-stage adjustable CAT trigger gives you a crisp, tunable pull for tighter groups, while the Inert Gas Technology (IGT) piston powerplant delivers consistency shot after shot with less vibration than spring-piston designs.
Noise is engineered out, not compromised. The Whisper Maxxim suppression system routes pellets through dual chambers to compress and contain sound expansion, keeping your shooting discrete—critical for pest control or early-season hunting. The stock is all-weather automotive-grade nylon with generous rubber inserts on the grip, forearm, and cheek rest, making long strings of shots comfortable. The included 3–9×40 shockproof air rifle scope gets you on target fast, and the Recoil Reducing Rail absorbs up to 74% of recoil to protect the scope lifespan and your shoulder. Manual and automatic safeties mean you're covered either way.
At 5.71 pounds and 45.3 inches overall, the Swarm Viper is nimble enough for sustained shooting sessions but substantial enough to feel solid in your hands. It accepts any standard .177 caliber pellet, so ammo is easy to source and affordable to stock.
| Caliber | .177 |
| Action | 10X Gen3i inertia-fed multi-shot |
| Magazine Capacity | 10 pellets |
| Velocity | 1300 fps (with alloy pellets) |
| Energy | 17.70 ft-lbs (24 J) |
| Powerplant | IGT (Inert Gas Technology) gas piston |
| Barrel | 19.9 in, fluted polymer-jacketed steel with Whisper Maxxim |
| Trigger | CAT (Custom Action Trigger), two-stage adjustable, 3.2/2.6 lbs pull |
| Cocking Effort | 30 lbs |
| Stock | Automotive-grade glass-filled nylon with rubber inserts (grip, forearm, cheek) |
| Recoil Pad | Shock Wave Absorber (SWA), up to 74% recoil reduction |
| Rail | 11 mm aluminum Recoil Reducing Rail (RRR) |
| Scope | Gamo 3–9×40 air rifle scope (shockproof, fogproof) with rings |
| Safety | Manual and automatic cocking safety |
| Weight | 5.71 lbs |
| Length | 45.3 in |
| Length of Pull | 14.4 in |
| Ammunition | Any .177 caliber pellet |
| Warranty | 3 years |
The rifle ships with a 10-pellet magazine, a 3–9×40 air rifle scope mounted with rings, and a manual safety system. Everything you need to start shooting right out of the box.
Yes. The Swarm Viper is designed for hunting and pest control. At 1300 fps with alloy pellets and 17.70 ft-lbs of energy, it delivers the speed and power for small-game and varmint hunting, especially when paired with appropriate pellet selection for your target.
The magazine is inertia-fed, meaning it uses the recoil impulse from each shot to automatically index and load the next pellet into the chamber. No manual cocking or loading steps between shots—just shoot and the gun prepares itself for the next round.
The Swarm Viper accepts any standard .177 caliber pellet. You have flexibility in ammo choice depending on your shooting discipline and target.
The Whisper Maxxim technology uses dual chambers to compress and contain noise expansion during pellet exit, keeping noise to a minimum compared to unsuppressed air rifles. However, we don't have a specific decibel rating to share, so we recommend checking independent reviews or testing one in person if sound level is critical to your decision.
Gamo USA
The Gamo Swarm Viper 10x Gen3i .177 caliber air rifle with scope is a modern, feature-rich airgun built for hunters, pest control shooters, and backyard marksmen who want serious power without the noise and recoil hassle of traditional firearms. This semi-auto multishot air rifle combines speed, accuracy, and innovative engineering in one package, delivering 1300 fps velocity with alloy pellets and a lightweight, ergonomic platform that's built to last.
What sets the Swarm Viper apart is its patent-pending 10X Gen3i inertia-fed magazine system. The magazine auto-indexes using the recoil force from each shot, so there's no manual loading between rounds—just point, shoot, and the next pellet is ready. That means faster, cleaner shooting with less fuss, plus the design keeps the rifle compact and low-profile without sacrificing balance or handling. The two-stage adjustable CAT trigger gives you a crisp, tunable pull for tighter groups, while the Inert Gas Technology (IGT) piston powerplant delivers consistency shot after shot with less vibration than spring-piston designs.
Noise is engineered out, not compromised. The Whisper Maxxim suppression system routes pellets through dual chambers to compress and contain sound expansion, keeping your shooting discrete—critical for pest control or early-season hunting. The stock is all-weather automotive-grade nylon with generous rubber inserts on the grip, forearm, and cheek rest, making long strings of shots comfortable. The included 3–9×40 shockproof air rifle scope gets you on target fast, and the Recoil Reducing Rail absorbs up to 74% of recoil to protect the scope lifespan and your shoulder. Manual and automatic safeties mean you're covered either way.
At 5.71 pounds and 45.3 inches overall, the Swarm Viper is nimble enough for sustained shooting sessions but substantial enough to feel solid in your hands. It accepts any standard .177 caliber pellet, so ammo is easy to source and affordable to stock.
| Caliber | .177 |
| Action | 10X Gen3i inertia-fed multi-shot |
| Magazine Capacity | 10 pellets |
| Velocity | 1300 fps (with alloy pellets) |
| Energy | 17.70 ft-lbs (24 J) |
| Powerplant | IGT (Inert Gas Technology) gas piston |
| Barrel | 19.9 in, fluted polymer-jacketed steel with Whisper Maxxim |
| Trigger | CAT (Custom Action Trigger), two-stage adjustable, 3.2/2.6 lbs pull |
| Cocking Effort | 30 lbs |
| Stock | Automotive-grade glass-filled nylon with rubber inserts (grip, forearm, cheek) |
| Recoil Pad | Shock Wave Absorber (SWA), up to 74% recoil reduction |
| Rail | 11 mm aluminum Recoil Reducing Rail (RRR) |
| Scope | Gamo 3–9×40 air rifle scope (shockproof, fogproof) with rings |
| Safety | Manual and automatic cocking safety |
| Weight | 5.71 lbs |
| Length | 45.3 in |
| Length of Pull | 14.4 in |
| Ammunition | Any .177 caliber pellet |
| Warranty | 3 years |
The rifle ships with a 10-pellet magazine, a 3–9×40 air rifle scope mounted with rings, and a manual safety system. Everything you need to start shooting right out of the box.
Yes. The Swarm Viper is designed for hunting and pest control. At 1300 fps with alloy pellets and 17.70 ft-lbs of energy, it delivers the speed and power for small-game and varmint hunting, especially when paired with appropriate pellet selection for your target.
The magazine is inertia-fed, meaning it uses the recoil impulse from each shot to automatically index and load the next pellet into the chamber. No manual cocking or loading steps between shots—just shoot and the gun prepares itself for the next round.
The Swarm Viper accepts any standard .177 caliber pellet. You have flexibility in ammo choice depending on your shooting discipline and target.
The Whisper Maxxim technology uses dual chambers to compress and contain noise expansion during pellet exit, keeping noise to a minimum compared to unsuppressed air rifles. However, we don't have a specific decibel rating to share, so we recommend checking independent reviews or testing one in person if sound level is critical to your decision.
