GSG Firefly .22LR 4.9” Barrel Green Pistol with Threaded Barrel - GERG2210TFFG

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GSG Firefly .22LR 4.9” Barrel Green Pistol with Threaded Barrel - GERG2210TFFG

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Regular Price: $ 219.99

Special Price $ 189.99

Quick Overview

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SKU: 5165449515
UPC: 813393019708
  • Caliber: .22 LR
  • Height: 5.3”
  • Length: 7.2”
  • Weight: 24.6 oz.
  • Magazine Capacity: 10 Rounds
  • Safety: Ambidextrous Thumb Safety
  • Action: DA/SA
  • Frame Material: Zinc Alloy with Polymer Overmold
  • Frame Finish: Green
  • Slide Materials: Zinc Alloy
  • Slide Finish: Green
  • Sights: Adjustable Rear
  • Grips: Black Polymer
  • Barrel Length: 4.9”
  • Barrel Material: Steel
  • Threaded Barrel: Yes
  • Barrel Threading: M9 x .75

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The GSG FireFly by German Sporting Guns features a wear-resistant alloy frame outfitted with an integrated accessory rail. The slide features adjustable sights, and along with the rugged blowback system, fixed barrel and superior ergonomic grip, the GSG FireFly delivers exceptional accuracy. Additional safeties include an internal locking device and slide mounted ambidextrous safety. Built to German standards for efficiency and performance, the Firefly is perfect for competition shooting, plinking or small game hunting.


Whether its Fur, Feathers, or the Range, Palmetto State Armory has something for all your shooting needs!

SKU: 5165449515
SKU 5165449515
Brand ATI
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165449515

Questions and Answers

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Browse 4 questions Browse 4 questions and 9 answers
Can the end of the threaded barrel be removed? I don't think I'll ever use a silencer.
Fredrich C on Dec 18, 2018
BEST ANSWER: Leave it alone if you don't use it .
Will the pistol cycle using subsonic (1050fps) ammo?
Dan S on Dec 22, 2018
BEST ANSWER: most likely not. The owners manual specifically call for high velocity ammo
What's the best ammo to use with this pistol that doesn't fail?
Brian J on Sep 13, 2018
BEST ANSWER: If you want to be able to shoot ANY ammo and not have it fail, then replace the recoil spring with one for standard velocity. Then it'll eat everything. They aren't that expensive either Just google search for sig sauer factory recoil spring mosquito standard velocity
How many mags does it come with?
Matt R on Nov 21, 2018
BEST ANSWER: Only one which is a bit of a pain but they are easy to find.


3.1 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Really good pistol. Works great with CCI ammo. Just needs to be well oiled down before shooting.
March 3, 2019
3 months ago
Good fit in my hand. Pistol looks good and seems solid. Looks nice a little bigger then I expected but still a nice size. The threaded barrel is a smaller size and will require an adapter for most standard suppressors.
February 23, 2019
4 months ago
Best gun buy
I bought two as I wanted to see how well the gun was made and the low cost of purchasing one, I was not disappointed and bought several more.
January 28, 2019
4 months ago
Very Picky on Ammo
I have had a GSG Firefly aka Sig Mosquito in the FDE color for about a year and enjoy shooting it suppressed. The problem is it will only run through a full mag when using CCI Mini Mags. Nearly every other manufacturer's 22 rounds cause multiple fail to eject and stove pipes. I had it out today and ran Winchester CPHP through it. I also had my Ruger Mark III Target out today and it ran the Winchester CPHP rounds flawlessly.

I have polished the feed ramp and cleaned it/lubed it thoroughly and still it will only function with CCI Mini Mags.
December 30, 2018
Not reliable!
Wrote a review detailing my experience with all brands of HV .22 LR in this pistol, about 6 weeks ago. It disappeared from the PSA website after a week or so. Failures to feed and failures to eject/cycle on every mag cycle. I’d love this pistol if it was reliable. I’ve tried all the recommended rounds. It performs best with the HV 40 gr. Still, rarely cycles a complete mag. Failure most common on the second to last round. I need a farm pistol that is reliable, and this is not the pistol. I wonder how long this review will stay up.
December 30, 2018
Good learner and plinker
This gun is perfect for being a learning platform with it's super heavy trigger pull, large frame and ergonomics. The doelwn side is the heavy trigger and the fact that it is ammo picky and you do need to use either CCI or Remington Gold is supposed to work well but I haven't tested it myself. On the plus side the failure to fire, feed, and eject on occasion is great for malfunction training. I bout this pistol for my wife to learn on before graduation her to my CZ P10 which she now shoots like a champ. I'd recommend this pistol for a learning gun but not a super fun range gun due to the malfunction and long break in period. After about 750 rounds the failures we're less frequent but do still persist about 10% of the time. Overall worth it for a plinker/trainer for the money. Don't pay more than $180 though.
December 30, 2018
Nice for the price
This is a well made pistol, but there are a few quirks, including a locking mechanism at the bottom of the grip. A key, not unlike a tiny AR-15 front sight adjustment tool, is provided, e sure that you check instruction manual the ensure that you have unlocked the firing mechanism. The barrel in threaded for a suppressor, but the threads are metric so you will need to purchase an adaptor to allow use of the standard 1/2"X28 threaded cans. The importer, American Tactical, sells the adaptor, but they are also available on e-bay or from other suppliers. Hughes Precision LLC is my go-to for these things. The rear sight is adjustable for windage turning a screw. Two extra front sights are provided to adjust elevation. I used only CCI Mini Mags and had no failure to fire or function issues. This is a good pistol, and I happen to like the black-on-green finish.
December 24, 2018
I would give this no star.
This is without a doubt the worst handgun I have ever owned. If you are into tap, rack, no bang oops try again this is the gun for you. I have tried 15 different kinds of ammo, OEM and after market mags, original barrel and Gemtec barrel. Nothing will make this gun function.
December 22, 2018

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