This is (in my opinion) the BEST sight tool for the Glock pistols. It is completely adjustable to fit any Glock pistol. Easily adjust your fixed rear sight, or you can completely remove and install new rear sights. If you are looking for a good sight tool to replace your sights on your pistol, this one works great. Perfect condition, heavy duty, made to last a lifetime. $65.00 shipped Priority Mail.