The standard-issue night sight set for the FBI and US Marshals! AmeriGlo's Agent night sight set for GlockA(R) is a major step forward in night sight design that delivers improved visibility and faster sight acquisition in any lighting conditions. These are low-profile, fixed sights designed to meet the daily carry needs of law enforcement officers. AmeriGlo Agent sights for GlockA(R) employ the proven 3-dot configuration preferred by many experienced shooters. The ProGlo style front blade has a vivid green Tritium lamp surrounded by a bright orange outline, so there's no trouble identifying your front sight under stress. The fixed rear sight has a rounded U-notch Mfg: Ameriglo