Date: 31/5/2020 3:46
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Gamo Swarm Magnum Multi-shot Air Rifle

4.589 reviews
Gamo Swarm Magnum

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5-year limited warranty



List Price $329.99 Save $30.00 (9%)


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Estimated in-stock date 06-22-20
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  • Whisper Fusion double-integrated
    Whisper Fusion double-integrated noise dampener (reduces report by 89.5%).
    IGT SYSTEM (INERT GAS TECHNOLOGY) Mach 1 provides a more consistent power level,
  • Gamo's RRR (Recoil
    Gamo's RRR (Recoil Reducing Rail) Technology subdues the taxing stresses placed on your scope from the intense recoil of air guns.
  • Shock Wave Absorber
    Shock Wave Absorber Recoil Pad absorbs up to 74% more recoil
  • Gamo's CAT -
    Gamo's CAT - Custom Action Trigger. New, independently adjustable 2 stage trigger.
  • WARNING This product
    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

Gamo Swarm Magnum Multi-shot Air Rifle

  • 10 Shot Repeater
  • Gas-piston powerplant (IGT Mach1--Inert Gas Technology)
  • Breakbarrel
  • Multi-shot
  • Rifled steel barrel
  • 1300 FPS (alloy), 920 FPS (lead)
  • Available with Whisper Fusion Sound Suppression technology or unshrouded
  • Recoil Reducing Rail (RRR) maximizes scope lifespan with 99.9% recoil compensation
  • 11mm scope rail with scope stop
  • SWA (Shock Wave Absorber) recoil pad reduces felt recoil by up to 74%
  • All-weather ambidextrous stock
  • Custom Action Trigger (CAT) independently adjustable 1st and 2nd stage, allows you to tailor your trigger.
  • 15" length of pull
  • 3-9x40 scope

Optics Features:

  • 3-9x magnification
  • 40mm objective lens
  • 1" tube
  • 30/30 reticle with fine crosshairs, perfect for target acquisition
  • 40 ft to 12 ft field of view
  • 3.5" eye relief
  • 21.6 oz
  • 13.5" long
  • Fogproof
  • Shockproof
  • Waterproof
  • Includes lens caps

Benefits of IGT over Spring Piston:

  • Smoother cocking
  • Smoother shooting (less vibration)
  • No spring torque
  • No spring fatigue, even if you leave it cocked for hours
  • Functions perfectly in cold weather
  • Lasts longer than a metal spring

Gamo broke the mold when it released the original Swarm Maxxim, the first successful multi-shot breakbarrel in over a decade.  Now comes the Gamo Swarm Magnum the most powerful Swarm yet.

The Swarm Magnum is sure to become the definitive Swarm, taking everything shooters loved about the original and dropping in a revved-up IGT Mach 1 gas piston and Whisper Fusion technology to deliver next-level power as quietly as possible. If noise isn't a concern, there is also an unshrouded version that delivers all of the same power and quick follow up shot capability.

Featuring some of Gamo’s best technologies, the Swarm Magnum has all the benefits of gas-pistons including easy cocking, smoother shooting, and the ability to fire in cold weather. Once shooters load up their 10-shot rotary magazine, the Magnum can spit .22 cal. pellets at speeds up to 1,300 fps, a  full 300 fps faster than the Maxxim. After every shot, simply break the barrel and the magazine automatically loads the next round into the breech.  This perfected system has been left unchanged for multiple shots as fast as you can cock the barrel.  

The Magnum’s stock has changed for the better as well.  Featuring a glass filled nylon synthetic thumbhole stock, the Magnum provides shooters with a comfortable hold in all-weather conditions.  Resting atop the stock is an 11mm Dovetail Recoil Reducing Rail System (RRR), designed to reduce recoil stress on your included 3-9x40 scope.  For crisp trigger pulls, the Magnum features Gamo’s Custom Action Trigger (CAT), an independently adjustable 2-stage trigger.

If you want the most powerful version of this revolutionary multi-shot breakbarrel available, choose the Swarm Magnum!

youTube video
See manual

other products by Gamo

Caliber.22" (5.5mm)
Max Velocity1300 fps
Muzzle Energy26.6 ft/lbs
Barrel Length21.3"
Overall Length49.2"
Shot Capacity10
Cocking Effort41 lbs
Front Sightnone
Rear Sightnone
Scopeable11mm dovetail
TriggerTwo-stage adjustable
Suggested forSmall game hunting/plinking
ActionBreak barrel
Body TypeRifle
Weight6.88 lbs
See manual

other products by Gamo

Average Customer Review

4.5 (89 reviews)

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5.0 5.0

5.0 5.0

5.0 5.0

By Christopher from USA on 2020-05-04
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0.00 ratings

Verified Purchase

Things I liked: Coming from an older Norica Gold, the Gamo Magnum is probably the best break barrel I have ever fired. Knowing that most non-pcp air rifles accuracy suffers past 30-35yrds, I have taken headshots on cottontail at 45-55yrds with ease using JSB 18.13. Cocking takes a bit of effort, but its not bad at all even after 100+ shots. Scope is decent for what it is. Pellets load smoothly. Contrary to what some say, this rifle is very quiet. I can shoot from my porch where I have several House Finch nests and it doesnt bother them at all.

Things I would have changed: Scope definitely needs some more, preferably some mil dots. Other than that, nothing.

What others should know: This rifle is not as pellet-picky as most make it out to be. Its accurate with the JSB 15.89, JSB 18.13 and the Predator GTO 11.75. I have put all pellets in 5-shot groups of 3/4 inch or less at 35yrds, and Crosman domed at 1 inch.


2.0 2.0

1.0 1.0

1.0 1.0

By James from USA on 2020-04-11
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1.01 rating

Things I liked: I never really got a chance to like it between scope issues accuracy issues I never got the performance out of it that I was looking for for $300! I spent the same $300 on a Hatsan flash PCP and I haven't looked back, you can keep the break barrels!!!!

Things I would have changed: The barrel that's got to be the flaw I couldn't hit anything for 10 yards away.

What others should know: I bought this weapon with high hopes early amid the hype. I was immediately let down by its accuracy. What's the point of all the power if you can't hit anything with it. I'm no Momo I can shoot! Maybe I got a lemon. All I know is I've thrown six Gamo weapons in the dumpster and this one was one of them!!!


5.0 5.0

5.0 5.0

5.0 5.0

By Joseph from USA on 2020-04-07
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0.00 ratings

Verified Purchase

Things I liked: This Air Rifle doesn't disappoint! This is my first purchase of a high powered .22 cal air and GAMO really hit the mark this rifle is everything I hoped and much more! The weight of this rifle is perfect and the cocking effort isn't as bad as some of the reviews make it out to be. I'm 5' 3" so I have shorter arm's and I have no problem cocking this rifle. The multi short mag is Great and it's easy to use , I would highly recommend ordering a few extra mags. I also upgraded the Scope to the Leapers UTG 3-9x50 AO True Hunter Rifle Scope, EZ-TAP, Illuminated Mil-Dot Reticle, 1/4 MOA, 1" Tube, See-Thru Weaver Rings and mounted it using the existing rings to make use of the Amazing Gamo Scope base. Second day out I was hitting 1 1/2 inch groups at 50 yards. I highly recommend zeroing in this Scope at 50 yards to make the best use of the high powered nature of the rifle.

Things I would have changed: Upgrade the Scope when you purchase your rifle you can always save the stock scope as a bachup.

What others should know: The two best Pellets I found are the Gamo Rockets and for Hunting the Polymag .22 Shorts (REMEMBER TO USE SHORTS. 22 WHEN ORDERING POLYMAG PELLETS.


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  • Scott from USA asked:

    So, I just bought the gamo swarm magnum and haven't even put 200 pellets through it and something in the scope broke. This scope sucks but works great on .177 gamo big cat. I had just got it sighted in and then I shot it and after my shot still looking through the scope I noticed it went blury and started rattling. It's like a lense got knocked loose inside. Any recommendations for a much better scope that fits for hunting? Thank you.

    • Mark from USA:

      Look at the Leapers/UTG line of scopes.Full warrantied and reasonably priced.

  • Ron from USA asked:

    at 40 yards can this gun take down a Woodchuck?

    • Mark from USA:

      With an 18 gr pellet yes.

  • Thomas from USA asked:

    Does anyone have a lot of experience with the Gamo Swarm Magnum Multi-shot Air Rifle

    See all discussions

    Item Description

    GA-611006125554 [PY-4560-8896]

    Gamo Swarm Magnum .22 cal, Shrouded

    Caliber.22" (5.5mm)
    Max Velocity1300 fps
    Muzzle Energy26.6 ft/lbs

    This product is out of stock.
    Estimated in-stock date 06-22-2020.
    Place your order now for delivery priority!

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    This product is out of stock. Estimated in-stock date 06-22-2020

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