Wheeler Engineering Armorer's Handgun Sight Tool with Heavy-Duty Construction and Reversible Assembly for Handguns, Gunsmithing and Maintenance ACCURACY: Features reference marks for making precise adjustments EASE OF USE: Precision machined with a large 4-post drive knob to easily push the sight and can be used to install, uninstall or adjust front and rear dovetail sights VERSATILITY: Works on all semi-auto pistols and the sight prong is reversible to accommodate Glock slides RELIABLE: Fully captures and supports slide so it will not break or deform DURABLE: Constructed of an aluminum frame with steel components