AmeriGlo CAP - Combative Application Pistol, Sight, Front/Rear, Fits Glock 42 and 43, Green Tritium Lime Green LumiLime Square Outline Front with Lime Green LumiLime (Non-Tritium) Rear, Front/Rear GL-605 AmeriGlo CAP (Combat Application Pistol) sets allow the shooter to align a highly visible front post with a brightly colored horizontal paint bar on the rear sight for rapid target acquisition. Point of impact is the A-Box at 15 yards when any portion of the front sight is visible in the rear notch" allowing for rapid sight alignment.