The tritiumGreen Dot SightSystem for Walther P-99 9mm and .40 Compact Pistols and .45 Full Size Pistols Fixed Set of Tru-Dot sights, offers the bestlow lightperformance of anynight sights. Day and night, the shooter's aiming reference is three self-illuminated dots, identical in appearance and location under all light conditions. Get the Meprolight advantage with the brightest night sights available today. Meprolight sights are used and trusted by military personnel and law enforcement officials. All Meprolight Tru-Dot sights are covered by a 12 years usable illumination warranty to original purchaser. The tritiumGreen Dot SightSystem for Walther P-99 9mm and 40 Compact Pistols and 45 Full Size Pistols Fixed Set of Tru-Dot sights, offers the bestlow lightperformance of anynig Day and night, the shooter's aiming reference is three self-illuminated dots, identical in appea Get the Meprolight advantage with the brightest night sights available today