ATI GSG Firefly .22 LR 4″ OD Green 10rd
Pros & cons
What works
- Weighs 24.6 oz — matches compact 9mm pistol handling characteristics
- 4-inch steel barrel provides 25% longer sight radius than 3-inch micro pistols
- Blowback operation costs 75% less per round than locked-breech centerfire
- OD green finish offers tactical appearance without camo premium
Trade-offs
- Non-threaded barrel prevents suppressor use — requires $150+ gunsmith modification
- Zinc alloy slide wears faster than steel — expect visible finish wear after 2,000 rounds
- Single magazine included — spare magazines cost $25 each and often backordered
- No optics cut — milling slide for red dot adds $120-180 aftermarket expense
Video review
Expert review
Specs at a glance
About this product
What is the ATI GSG Firefly .22 LR? It's a compact blowback-operated semi-automatic pistol chambered in .22 Long Rifle, designed specifically for low-cost training and recreational shooting. With its 4-inch non-threaded steel barrel and 10-round magazine capacity, it bridges the gap between full-size centerfire handguns and dedicated rimfire trainers. The OD green frame and black slide provide distinctive aesthetics while maintaining functional simplicity.
What is the ATI GSG Firefly used for?
This pistol serves as an economical training platform for shooters looking to maintain proficiency with centerfire handguns. At 24.6 ounces unloaded, it approximates the weight of many compact 9mm pistols, making it ideal for trigger control and marksmanship practice. The blowback operation and .22 LR chambering keep ammunition costs under 8 cents per round compared to 30+ cents for 9mm, allowing for extended range sessions without breaking the bank.
How does the ATI GSG Firefly compare to the Stevens 334 Rifle?
The Firefly pistol offers entirely different training benefits than the bolt-action Stevens 334 Rifle in .308 Win. While the Stevens provides precision rifle training at distances up to 300 yards, the Firefly focuses on handgun fundamentals at 7-25 yards. The pistol's semi-automatic action allows for rapid follow-up shots and malfunction drills, whereas the bolt-action rifle emphasizes single-shot precision and scope management.
What does it weigh and what are the dimensions?
The unloaded pistol weighs 24.6 ounces with dimensions measuring 7.2 inches in length, 5.1 inches in height, and 1.3 inches in width. These proportions make it comparable to many subcompact 9mm handguns in overall size, though the 4-inch barrel provides better sight radius than typical concealed carry pistols. The zinc alloy slide keeps weight manageable while the steel barrel maintains necessary durability for rimfire pressures.
Who is this NOT for?
This pistol isn't suitable for hunters or those seeking a suppressor host platform. The non-threaded barrel prevents direct attachment of muzzle devices or suppressors, eliminating it from consideration for varminting or quiet plinking. Additionally, the 10-round magazine capacity makes it a poor choice for competitive shooting disciplines like Steel Challenge, where competitors typically use 15-22 round magazines for rimfire divisions.
What's in the box?
The package includes one 10-round magazine, the pistol itself, and basic documentation—no additional accessories or cleaning tools. Unlike some competitors that include multiple magazines or hard cases, ATI keeps packaging minimal to maintain the $243.99 price point. Shooters should budget for additional magazines at approximately $25 each and consider a proper cleaning kit since rimfire ammunition tends to foul actions more quickly than centerfire.
Is the ATI GSG Firefly worth it at $243.99?
At this price point, it represents solid value for dedicated training use compared to alternatives like the Taurus TX22 Compact at $329. The savings of $85 can purchase nearly 1,000 rounds of .22 LR ammunition, making the Firefly more economical for high-volume shooters. However, the non-threaded barrel and single-magazine inclusion mean additional costs for those wanting suppressor compatibility or spare magazines.
Key attributes
| upc | 813393019562 |
| manufacturer | German Sport Guns / GSG |
| manufacturer part number | GERG2210FFG |
| action | Double / Single Action |
| barrel length | 4" |
| caliber/gauge | .22 LR |
| capacity | 10 + 1 |
| color | Black |
| length | 12.1500 |
| number of magazines | 1 |
| product type | Pistol |
| safety | Ambidextrous Thumb |
| shipping weight | 2.7 |
| sights | Adjustable Rear |
| sights type | 3-Dot |
| slide description | Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (guam) | NO SALE TO GUAM |
| state restriction (pr) | NO SALE TO PUERTO RICO |
| state restriction (vi) | NO SALE TO VIRGIN ISLANDS |
| units per box | 1 |
Frequently asked questions
- Is it compatible with standard .22 LR ammunition?
- Yes, it fires standard 40-grain .22 LR rounds at velocities around 1,050 fps from the 4-inch barrel. I recommend high-velocity ammunition from CCI or Federal for reliable cycling, as some subsonic rounds may not generate enough pressure to cycle the blowback action consistently.
- Does it fit standard holsters?
- No, the Firefly requires specific holsters due to its unique frame dimensions. The 1.3-inch width and integrated accessory rail prevent compatibility with most universal holsters. Blackhawk and DeSantis offer molded options specifically for this model, typically costing $35-50.
- How long does shipping take?
- Firearms ship within 3 business days to your selected FFL dealer after background check completion. Transit time varies by carrier but typically adds 2-5 business days depending on your location relative to our warehouse in Texas.
- Can I return it if it doesn't function properly?
- Yes, we offer a 30-day functional warranty through ATI. If the pistol experiences mechanical failures within the first 500 rounds, contact our support team for a return authorization. You'll need to ship it to ATI's service center in Pennsylvania for evaluation and repair.