The Tiger Rock Inc. F225 GSG5 Muzzle Brake Adapter enhances your shooting performance while providing durability and style. Constructed from premium 6061-T6 aluminum, this adapter is designed to fit GSG5 rifles perfectly, featuring an 8.5" length with a standard 1/2" x 28 thread pitch for maximum compatibility with AR-15 muzzle brakes. 6061-T6 aluminum construction Matte Black finish Length: 8.5" 1/2" x 28 thread pitch Fits: GSG5 Transform your shooting experience with this essential accessory for enhanced accuracy and control.