Increase your "after hours" tactical effectiveness. Meprolight Tru - Dot Front/Rear Sights. An absolutely rugged, impact and shot-resistant, tritium-bright Night Sight set. A favorite of military and law enforcement personnel with no patience for second-rate gear, Tru-Dot Sights provide 3 consistent illuminated aiming points for easy targeting day and night. Installs easily with NO Gunsmithing. This sight is meant to fit the Tac 1911 FS.45 ACP pistols. This set is not for 2011 Tactical Series..