LiteWave H3(R) sight combines Tritium with the HIVIZ Litepipe technology for 24 illumination. Now you can have the advantage of day and night performance all in one sight system. All steel construction sight sets are rugged and durable, designed for the roughest use, whether it is personal defense and protection, Law Enforcement or Military.The new LiteWave H3(R) ensures fast sight acquisition and a bright sight picture day or night. Features: HKN321, HKN421, HKN521, HKN621 Fits: HK VP9, VP40, VP9SK, HK45, HK45C, P30, P30L Sight visibility in all light conditions Ultra bright encapsulated Tritium Factory sight heights All steel construction Fits standard holsters Patented technology