The LPA TPU Glock sight is a single adjustable rear sight which easily fits factory dovetails of the most popular auto pistols without replacement of the factory front sight. This rear sight is machined from solid steel using state-of-the-art CNC milling. Precise adjustments can be made using the micro metric windage and elevation hardened click screws. Minor Gunsmithing may be required.FeaturesCNC milled from solid steelLow-profile designMicro metric adjustment for windage and elevation DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.