GSG Firefly
The GSG Firefly is a German Sport Guns .22 LR semi-automatic pistol designed from the ground up for suppressor use — featuring a threaded barrel as standard, fiber optic sights, and a polymer frame that keeps the total package light and practical. One of the most purposefully designed suppressor-host .22 pistols available at any price.
Read our full GSG Firefly Buying Guide ↓
About GSG (German Sport Guns)
German Sport Guns (GSG) is a German manufacturer best known for their .22 LR replicas of iconic firearms — the GSG-5 (MP5 replica), GSG-16 (MP44 replica), and GSG 1911 (.22 LR 1911). The Firefly is a departure from the replica concept — an original design optimized for suppressor use and practical .22 LR shooting rather than historical recreation. GSG brings German manufacturing quality to an accessible price point with the Firefly.
Key Features
Threaded barrel as standard — The Firefly ships with a threaded barrel (1/2-28 thread pitch standard for .22 LR suppressors) as standard equipment. As of January 1, 2026, suppressors require only a standard background check — making the Firefly an immediately practical suppressor host from purchase.
Fiber optic sights — Front fiber optic sight for fast target acquisition in varying light conditions. Practical for range use and improved sight picture compared to standard black post sights.
Suppressor-optimized design — Beyond the threaded barrel, the Firefly's overall design considers suppressor use — the sight height, overall balance, and handling are designed around the assumption that a suppressor will often be attached.
10-round magazine — Standard 10-round single-stack magazine. Additional magazines are available for extended range sessions.
Lightweight polymer frame — The polymer frame keeps the Firefly light and manageable — particularly relevant for suppressed use where the added weight of a suppressor can make a heavier pistol feel nose-heavy.
Firefly as a Suppressor Host
The .22 LR cartridge is one of the most suppressor-friendly rimfire calibers available. Subsonic .22 LR loads — already below the speed of sound — through a quality suppressor produce genuinely quiet results that don't require hearing protection for most shooters. The Firefly's threaded barrel, fiber optic sights (tall enough to see over most suppressors), and lightweight frame make it one of the most purpose-designed .22 suppressor hosts in the market. With suppressors now requiring only a background check, there has never been a better time to build a suppressed .22 LR setup.
How It Compares
The Firefly competes with the Ruger Mark IV Tactical (also threaded barrel standard) and the Browning Buck Mark URX in the suppressor-ready .22 pistol segment. The Firefly's advantage is its lower price and its specific design optimization for suppressed use. The Browning Buck Mark wins on trigger quality and competition use; the Ruger Mark IV wins on aftermarket depth. The Firefly wins on value and suppressor-specific design intent.
FAQ
Does the GSG Firefly come with a threaded barrel?
Yes — the Firefly ships with a threaded barrel (1/2-28) as standard equipment on all configurations.
What caliber is the GSG Firefly?
The GSG Firefly is chambered in .22 LR with a 10-round magazine.
Is the GSG Firefly good for suppressor use?
Yes — it's specifically designed for suppressor use. The threaded barrel, appropriate sight height for most suppressors, and lightweight frame make it one of the most purposeful suppressor-host .22 pistols available.
Where is the GSG Firefly made?
German Sport Guns is a German manufacturer. The Firefly is made in Germany.