BUY ONLINE and SAVE - ONLINE SALE PRICE - Good for online purchase only. The German Sport Guns or GSG FireFly (formerly sold as the Sig Sauer Mosquito) features a wear-resistant alloy frame outfitted with an integrated accessory rail. The slide has an adjustable rear sight, and along with the rugged blowback system, fixed barrel and superior ergonomic grip, the GSG FireFly delivers exceptional accuracy. Safeties include an internal locking device and slide-mounted ambidextrous safety. This model has a 4" threaded steel barrel and a black metal finish.