Ultimate Arms Gear Stainless Steel Front Sight 3/16" Hex Nut Driver Wrench Tool for All Models Glock Pistol Handgun Gun & Walther P99 Smith & Wesson S&W 99 SW99 & Other Pistols This high quality tool is perfect for your Glock range bag to adjust your sights before the next competition. Allows you to easily remove & install Glock front sights. Designed to fit the small, hex head screw that holds Glock aftermarket sights in place. It will make installing replacement sights or removing sights for maintenance much easier and more secure with significantly less chance of damage to your firearm. Also fits Walther P99, Smith &Wesson SW99, and other pistols with sights that use 3 / 16" hex head screws.