GSG Firefly 22 Long Rifle 4in Blued/FDE Pistol - 10+1 Rounds - If you think the Firefly from German Sport Group looks a lot like a SIG Sauer Mosquito, you would be absolutely right. In fact it IS the former Mosquito. GSG manufactured this pistol under the SIG Sauer brand for many years, and have now opted to continue it under their own brand, to be imported by American Tactical Imports. This polymer frame semi auto has a 4in barrel and fixed sights. An accessory rail provides a mounting point for an optional light or laser. The controls are normal SIG Sauer, including a decocker, but GSG has added a slide mounted safety to the Firefly. Ambidextrous Thumb Safety Double Action / Single Action Zinc Alloy Frame Zinc Alloy Slide Adjustable rear sight Black Polymer Grips