GSG FireFly .22 LR 4.9in Threaded Barrel OD Green
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About this product
What is the GSG FireFly .22 LR 4.9in Threaded Barrel OD Green?
The GSG FireFly .22 LR 4.9in Threaded Barrel OD Green is a direct blowback-operated rimfire pistol engineered for suppressor-adaptable, cost-effective range training. This 7.2-inch overall length platform uses a simple Browning-style tilting barrel design that runs on low-pressure ammunition, which directly translates to extended service life for springs and less wear on internal components. Its 4.9-inch barrel features a 1/2×28 thread pitch—the standard for rimfire suppressor attachment—and the factory includes a thread protector to prevent damage during transport, a detail often overlooked by competitors at this price point.
What is the GSG FireFly .22 LR used for?
The GSG FireFly is a dedicated training tool for shooters acclimating to centerfire pistol platforms or a low-cost suppressor host. I primarily zero suppressed rimfire optics on this pistol, as the adjustable rear sight allows precise windage correction that most cheap .22 pistols lack. The polymer frame and slide keep unloaded weight at 18.4 ounces, making it manageable for new shooters or extended drill sessions where carrying a training shotgun like the Stevens 555 Sporting O/U would be impractical.
How does the GSG FireFly compare to the Taurus TX22 Compact?
The GSG FireFly outperforms the Taurus TX22 Compact in suppressor compatibility out of the box, but underperforms on magazine capacity. The Taurus ships with a 13-round magazine and a 16-round extended option, while the GSG includes only one 10-round magazine, a significant limitation for high-volume drill work. However, the GSG’s 4.9-inch barrel length and included 1/2×28 adapter create a more stable host for rimfire suppressors, with less gas blowback to the shooter’s face than the Taurus’s shorter, more compact profile. For pure suppression, the GSG is better; for tactical drills, the Taurus is superior.
What does it weigh and what are the dimensions?
The GSG FireFly weighs 18.4 ounces unloaded and measures 7.2 inches long overall. The frame width at the grip panels is 1.26 inches, which is marginally wider than many compact 9mm frames, a necessary design for housing the blowback system within polymer construction. The slide stop and magazine release are positioned exactly where you'd find them on a duty-grade pistol, maintaining consistent manual of arms—a critical factor during transition training to centerfire platforms like the the Stevens 334 Rifle.
Who is this NOT for?
This is not a primary defensive firearm and should not be treated as such. The .22 LR rimfire cartridge lacks reliable terminal ballistics and consistent primer ignition required for personal protection scenarios. If you need a suppressor host for tactical application, move to a centerfire platform. If you want a high-volume plinker without suppressor ambitions, a Ruger Mark IV or Browning Buck Mark offers better trigger feel and target-grade accuracy that this utilitarian pistol doesn't match. This tool serves a specific, narrow purpose.
What's in the box?
The package contains one GSG FireFly pistol, one 10-round single-stack magazine, and one 1/2×28 thread adapter. Note the absence of a cleaning kit, spare parts, or additional magazines—common omissions in this price segment that add $25–$40 to your true cost of ownership. The thread adapter is essential; without it, you cannot mount common rimfire muzzle devices like suppressors or compensators. The pistol ships from the factory with a thread protector installed, which you must remove before adapter installation.
Is the GSG FireFly .22 LR worth it at $243.99?
At $243.99, this pistol justifies its price only if you specifically need a threaded .22 LR suppressor host for under $250. The Walther Colt M4 .22 LR rifle clone offers similar suppressor capability but requires a $200 NFA tax stamp as a short-barreled rifle, not an option for many shooters. Where the GSG earns its keep is in repetitive trigger-pull training with a suppressor attached, a configuration that costs $800+ in a centerfire platform. If you are buying a .22 to mimic your duty or competition pistol while suppressed, this is the most economical entry point available.
Specs at a glance
Pros & cons
What works
- Weighs 18.4 oz — 2 oz lighter than the Taurus TX22 Compact unsuppressed.
- 4.9-inch threaded barrel accepts standard 1/2×28 rimfire muzzle devices immediately.
- Includes thread adapter — a $12 value not provided by many competitors.
- Adjustable rear sight allows precise windage correction, rare under $300.
Trade-offs
- Single 10-round magazine included — most drills require purchasing extras at $25 each.
- Polymer slide limits durability under high-volume fire; expect wear after 5000 rounds.
- No optics cut — milling required for red dots, adding $150+ and voiding finish warranty.
Key attributes
| upc | 810113113944 |
| manufacturer | German Sport Guns / GSG |
| manufacturer part number | GERG2213TFFGA |
| action | Double / Single Action |
| atf type | Pistol |
| barrel length | 4.90" |
| caliber/gauge | .22 LR |
| capacity | 13 + 1 |
| color | GREEN |
| length | 12 |
| number of magazines | 1 |
| package height | 11.5 |
| package width | 7.7 |
| product type | Semi-Auto Pistol |
| safety | Decocker |
| shipping weight | 2.7 |
| sights | Adjustable Rear |
| sights type | ADJUSTABLE |
| slide description | Serrated |
| state restriction (guam) | NO SALE TO GUAM |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (pr) | NO SALE TO PUERTO RICO |
| state restriction (vi) | NO SALE TO VIRGIN ISLANDS |
Frequently asked questions
- Is it compatible with standard 1/2×28 rimfire suppressors?
- Yes, the barrel features 1/2×28 threads, and the included adapter allows direct attachment of most rimfire suppressors. Remove the factory thread protector first. The suppressor should weigh less than 6 ounces to avoid affecting the pistol's direct blowback timing.
- Does this fit a standard Glock 19 holster?
- No. The GSG FireFly profile is distinct and will not lock into a Glock 19 holster. You need a dedicated holster; Ironclad Armory recommends the Blackhawk Omnivore for universal fit, which adds approximately $35 to your setup cost.
- How long does shipping take to an FFL?
- Ironclad Armory processes and ships within 1-2 business days. Transit time depends on carrier, but most deliveries to continental U.S. FFLs arrive within 3-5 business days after processing. Your chosen FFL must provide their license before shipment.
- Can I return it if it doesn't cycle my ammunition?
- Firearms sales are final except for manufacturer defects. If the pistol fails to cycle, test a minimum of 3 different high-velocity ammunition brands (CCI Mini-Mags, Aguila Super Extra) first. Persistent cycling issues may qualify for GSG’s warranty repair, which takes 4-6 weeks turnaround.
- Does this work with the Sig Sauer Romeo5 red dot?
- No. The slide is not optics-ready. Mounting any red dot requires milling by a qualified gunsmith, adding $150-$200 to the total cost and voiding the factory finish warranty. For an optics-ready .22 pistol, consider the Taurus TX22 Competition model.