HIVIZ Glock Front/Rear Combo Sight for .45 Calibers Includes front and rear sight Front sight is interchangeable red and green LitePipes Rear sight contains green LitePipes Front and rear Glock sight set fits all Glock pistols in 45 ACP, 45 GAP and 10mm calibers except ported models HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.