Ameriglo’s Optic Compatible Sight Sets are a versatile upgrade for many of today’s popular handguns. These higher sights are perfect for co-witnessing with a micro red dot, for use as backup sights, or for use with a suppressor. Available in various heights and outlines. Ameriglo Optic Compatible XLT Grn Trit w/White Outline Front, Single Dot Grn Trit Rear .315"F .394"R Sight Set for Glock XL (Excl. 42,43,48) GL-191