$319.90
New for 2025. This is the next generation Swarm Magnum pellet rifle in .25 caliber. Unprecedented knockdown power. Unparalleled performance. Offering smoother operation and improved accuracy for an outstanding shooting experience, the Swarm Magnum Pro 8X GEN3i includes the patent-pending 8X GEN3i Technology with Gamo’s revolutionary 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 also features a redesigned stock that blends a classic hunting profile with automotive-grade glass-filled nylon for strength and durability. The forearm, grip, and cheekpiece are non-slip texturized for confident handling in any conditions.
The next evolution of the Swarm Magnum—now in .25 caliber. Unprecedented knockdown power. Unrivaled performance. The Swarm Magnum Pro 8X GEN3i delivers smoother operation, improved accuracy, and serious stopping power for small game and pest control.
This .25 caliber break barrel includes our patent-pending 8X GEN3i Technology, featuring a horizontal inertia-fed magazine system that uses the rifle’s own recoil to auto-index the 8-shot magazine. It’s lighter, lower profile, and engineered for a smoother breech-loading process with every shot.
Powered by Gamo’s most advanced systems—including the 33mm cylinder and IGT Mach 1 gas piston—this rifle launches pellets up to 965 fps, delivering superior energy transfer and penetration downrange. The new stock design uses automotive-grade glass-filled nylon with non-slip texturing at the forearm, grip, and cheekpiece for maximum control in the field.
Whether you’re targeting larger pests or simply want serious power in your hands, the Swarm Magnum 8X GEN3i in .25 caliber is built for those who demand more from every shot.
Includes an 8-shot magazine, Gamo 3-9×40 scope, and one-piece mount.
| Weight | 9.3368 lbs |
|---|---|
| Dimensions | 51 × 2.688 × 7.25 in |
| Caliber | .25 |
| Velocity: | 965 feet per second (fps) with Alloy Pellets |
| Action: | 8X GEN3i 8-Shot, Auto-Loading Technology |
| Noise dampening: | Whisper Fusion |
| Powerplant: | IGT Mach 1 Inert Gas Technology gas piston (33 mm cylinder) |
| Barrel: | Metal jacketed rifled steel barrel |
| Trigger: | Two stage independently adjustable CAT (Custom Action Trigger) |
| Stock: | Automotive grade glass filled nylon all-weather |
| Checkering: | Non-Slip texture design on grip and forearm |
| Recoil Pad: | SWA (Shock Wave Absorber) Recoil pad with up to 74% recoil absorption |
| Safety: | Manual safety and automatic cocking safety system* |
| Optics: | GAMO 3-9×40 air rifle scope with rings (shockproof, fogproof) |
| Rail: | 11 mm aluminum rail, RRR (Recoil Reducing Rail) |
| Warranty: | 5 Year |
| Weight: | 6.88 lbs |
| Length: | 49.2 in |
| Length of Pull: | 15 in |
| Ammunition: | .25 Cal. – Any .25 Cal. Pellet |
| Trigger Pull: | 3.2/2.6 lbs |
| Barrel Length: | 21.3 in |
| Cocking Effort: | 41 lbs |
| Energy: | 26.55 ft/lbs – 36 J |
*Manual Safety: The manual safety is the lever that is in front of the trigger, if you pull it forward, the safety is off, if you pull it backwards (towards the trigger), the safety is on. Please make sure you do not turn the safety off until you are ready to shoot.
Automatic Cocking Safety System: The automatic safety cocking system is a different safety feature than the Manual Safety; it does not allow you to pull the trigger while cocking the air rifle. When you break the barrel this safety system is engaged and when you put the barrel back into position this safety system is disengaged.
Please read the manual before using.
The next evolution of the Swarm Magnum—now in .25 caliber. Unprecedented knockdown power. Unrivaled performance. The Swarm Magnum Pro 8X GEN3i delivers smoother operation, improved accuracy, and serious stopping power for small game and pest control.
This .25 caliber break barrel includes our patent-pending 8X GEN3i Technology, featuring a horizontal inertia-fed magazine system that uses the rifle’s own recoil to auto-index the 8-shot magazine. It’s lighter, lower profile, and engineered for a smoother breech-loading process with every shot.
Powered by Gamo’s most advanced systems—including the 33mm cylinder and IGT Mach 1 gas piston—this rifle launches pellets up to 965 fps, delivering superior energy transfer and penetration downrange. The new stock design uses automotive-grade glass-filled nylon with non-slip texturing at the forearm, grip, and cheekpiece for maximum control in the field.
Whether you’re targeting larger pests or simply want serious power in your hands, the Swarm Magnum 8X GEN3i in .25 caliber is built for those who demand more from every shot.
Includes an 8-shot magazine, Gamo 3-9×40 scope, and one-piece mount.
| Weight | 9.3368 lbs |
|---|---|
| Dimensions | 51 × 2.688 × 7.25 in |
| Caliber | .25 |
| Velocity: | 965 feet per second (fps) with Alloy Pellets |
| Action: | 8X GEN3i 8-Shot, Auto-Loading Technology |
| Noise dampening: | Whisper Fusion |
| Powerplant: | IGT Mach 1 Inert Gas Technology gas piston (33 mm cylinder) |
| Barrel: | Metal jacketed rifled steel barrel |
| Trigger: | Two stage independently adjustable CAT (Custom Action Trigger) |
| Stock: | Automotive grade glass filled nylon all-weather |
| Checkering: | Non-Slip texture design on grip and forearm |
| Recoil Pad: | SWA (Shock Wave Absorber) Recoil pad with up to 74% recoil absorption |
| Safety: | Manual safety and automatic cocking safety system* |
| Optics: | GAMO 3-9×40 air rifle scope with rings (shockproof, fogproof) |
| Rail: | 11 mm aluminum rail, RRR (Recoil Reducing Rail) |
| Warranty: | 5 Year |
| Weight: | 6.88 lbs |
| Length: | 49.2 in |
| Length of Pull: | 15 in |
| Ammunition: | .25 Cal. – Any .25 Cal. Pellet |
| Trigger Pull: | 3.2/2.6 lbs |
| Barrel Length: | 21.3 in |
| Cocking Effort: | 41 lbs |
| Energy: | 26.55 ft/lbs – 36 J |
*Manual Safety: The manual safety is the lever that is in front of the trigger, if you pull it forward, the safety is off, if you pull it backwards (towards the trigger), the safety is on. Please make sure you do not turn the safety off until you are ready to shoot.
Automatic Cocking Safety System: The automatic safety cocking system is a different safety feature than the Manual Safety; it does not allow you to pull the trigger while cocking the air rifle. When you break the barrel this safety system is engaged and when you put the barrel back into position this safety system is disengaged.
Please read the manual before using.
THIS DEVICE IS A REPLICA FIREARM UNDER DIFFERENT STATE LAWS. DO NOT BRANDISH, DISPLAY, EXHIBIT OR EMPLOY THIS AIRGUN: (I) IN PUBLIC, SINCE IT MAY CONFUSE PEOPLE; OR (II) IN A THREATENING MANNER, BY CAUSING OR ATTEMPTING TO CAUSE TERROR TO ANOTHER PERSON, OR BY ACTING WITH RECKLESS DISREGARD FOR THE RISK OF CAUSING TERROR TO ANOTHER PERSON. IT MAY BE A CRIME PUNISHABLE BY FINES AND IMPRISONMENT. POLICE AND OTHERS MAY THINK THIS ARIGUN IS A FIREARM. DO NOT CHANGE THE COLORATION AND MARKINGS REQUIRED BY STATE OR DEFERAL LAW OR REGULATIONS TO MAKE IT LOOK LIKE A FIREARM. THAT IS DANGEROUS AND MAY BE A CRIME.
THIS IS NOT A TOY. ADULT SUPERVISION REQUIRED. MISUSE OR CARELESS USE MAY CAUSE SERIOUS INJURY OR DEATH. MAY BE DANGEROUS UP TO 250 YARDS / 229 METERS. THIS AIRGUN IS RECOMMENDED FOR USE BY THOSE 16 YEARS OF AGE OR OLDER. READ ALL INSTRUCTIONS BEFORE USING. THE PURCHASER AND USER SHOULD CONFORM TO ALL LAWS GOVERNING THE USE AND OWNERSHIP OF THIS AIRGUN.
WARNING This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
