AmeriGlo Optic Compatible Sets for Glock, For Glock 43X and 48, Black Front and Rear, .220 Front and .295 Rear GL-453 AmeriGlo sights are constructed from high quality materials in order to provide you with a superior aftermarket sight option for your Glock firearm. This sight set with flat black rear and serrated front was designed for use on Glock 43X and Glock 48 MOS pistols with Holosun 407/507K optics. Whether you use your firearm for personal protection or just plinking at the range AmeriGlo sights has you covered.