Ameriglo Optic GL-429 Compatible XLT Black Serrated .315"F, Flat Black .394"R Sight Set for GlockAmeriglos Optic Compatible Sight Sets are a versatile upgrade for many of todays 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 Black Serrated .315"F, Flat Black .394"R Sight Set for Glock GL-429