"The Meprolight ML11515 Tru-Dot Green Rear Night Sight for Heckler and Koch P30, P2000, SK, P7M8, M10, USP Pistols offer low light performance that has no equal among night sights. Day and night, the shooter's aiming reference is three solid dots, identical in appearance and location under all light conditions. It is renown for their quality performance. It is used and trusted by military personnel and law enforcement officials. It offers a handgun sighting system for improved rapid instinctive aiming which requires no transition from day to night use. It adds no weight and occupies zero space - a critical concern in external pistol sight design. The night sights withstand prolonged immersion in commonly used solvents and cleaning compounds.|The ML-11515 set is meant for use on the P-7 series pistols. However, it will not fit the P-7 ""PSP"" version.|Self Illuminated light source - No batteries or switches|Operates under all weather conditions|Totally integrated day and night sighting|Maintenance free|Can be mounted directly with no weapon modifications|Tests by marksmen show an increase of over 85% in hit capability"