Gamo Swarm Fusion 10X Gen 3 .177 Caliber Gas Piston Air Rifle with 3-9x40mm Scope and All-Weather Thumbhole Stock

The Gamo Swarm Fusion 10X Gen 3 .177 caliber air rifle is built for shooters who want fast follow-up shots without the reload cycle. This gas piston air rifle combines a 10-shot magazine system with rapid-fire capability, making it an effective choice for backyard pest control, target practice, and small-game hunting. It arrives ready to shoot with a factory-mounted 3-9x40mm scope and fiber optic sights, so you can get rounds downrange the same day it arrives.

What sets the Swarm Fusion apart is its focus on shooter comfort and accuracy. The IGT gas piston system delivers consistent power while producing less vibration than spring-driven alternatives, and Gamo's Whisper Fusion sound dampening technology keeps noise levels low—important if you're hunting near occupied areas or simply prefer a quieter shot. The two-stage CAT trigger is independently adjustable, letting you fine-tune the pull weight to your preference. Recoil is managed by a Recoil Reducing Rail that Gamo claims absorbs up to 74% of the energy, extending the life of your scope and improving your ability to stay on target for follow-up shots.

The rifle itself weighs less than 6 pounds and features a thumbhole all-weather stock in automotive-grade nylon with non-slip checkering on the grip and forearm. At 45.7 inches overall and with a 15-inch length of pull, it fits most adult shooters and isn't unwieldy in the field. The 20.5-inch fluted barrel is polymer-jacketed, and a manual safety plus automatic cocking safety system provide redundancy. It runs on any standard .177 caliber pellet and produces 1300 feet per second with PBA Platinum ammunition.

This is a no-frills, mission-focused air rifle: you break the barrel to cock, load a pellet, and fire. Repeat up to ten times before dropping in a fresh magazine. There's no spring to fatigue, no complex mechanics to maintain—just a straightforward powerplant designed to shoot consistently for years.

Key Features

• 10-shot magazine with quick-shot technology—no reload between shots
• IGT gas piston powerplant for consistent accuracy and reduced vibration
• Whisper Fusion sound dampening keeps noise levels low for sensitive shooting environments
• Two-stage CAT adjustable trigger for crisp, customizable trigger pull
• Recoil Reducing Rail with up to 74% recoil absorption to protect optics and aid follow-up accuracy
• Includes 3-9x40mm shockproof, fog-proof scope and rings
• Fiber optic sights (front and rear) for quick target acquisition in low light
• All-weather thumbhole stock with non-slip grip texture
• Shock Wave Absorber recoil pad for shooter comfort
• Manual safety plus automatic cocking safety

Specifications

Frequently Asked Questions

What ammunition does the Gamo Swarm Fusion 10X Gen 3 shoot?

Any standard .177 caliber pellet. The rifle is rated for 1300 fps with PBA Platinum pellets, though performance will vary with pellet weight and brand.

How many shots can I take without reloading?

The 10-shot magazine lets you fire up to ten pellets by breaking the barrel and cocking between shots, with no magazine change required. Once those ten are spent, insert a fresh magazine.

Does it come with a scope?

Yes. A Gamo 3-9x40 shockproof, fog-proof scope and mounting rings are included, ready to install.

What is the length of pull, and will it fit me?

The length of pull is 15 inches. This is a standard measurement from the trigger to the rear of the stock. The thumbhole design accommodates most adult shooters, but if you're particularly large or small, measure against rifles you've already shot or handle one in person to confirm fit.