The Trijicon GL02 Night Sight Installation Tool Kit contains everything you need to mount a Trijicon Bright & Tough or HD night sight set on your Glock pistol. It is compatible with almost all Glock designs, but the 42 and 43 require an additional adapter to accommodate their narrower slides. The kit includes a precise front sight tool and a heavy-duty rear sight mover, making it easy to install, remove or adjust your sights. The mover’s cross-shaped base allows it to stand freely on your workbench to free up your hands, and its smooth-turning screw makes precise adjustments easy. Fits all Glock models.