Mepro HVS fixed pistol sight features an extremely bright contrasting colored ring front sight. Shooters can select from one of three colors- Green, Yellow or Orange-for the front sight. The tritium is illuminated green to provide low-light and nighttime aiming capabilities. The contrast in colors of the two components helps the shooter focus on the front sight quicker, which is critical in defensive and competitive shooting. FeaturesLarge and colored front sight ringThe Brightest Tritium night sightsAvailable for various handgun models DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.