HIVIZ Glock Overmolded Fiber Optic Tactical Front Sight (Red) Fits: all glock's Red in color Made in the USA Glock Tactical font sight Resin overmolded Red LitePipe Tactical bead size .120" diameter Fits all Glock models except ported or compensated models HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.