Night Fision Perfect Dot Front Night Sights w/ Square Notch Rear for HK Orange Front w/ Green Tritium - Black Rear w/ Gree fits VP9 VP9SK .45C .45C. These Pistol Parts by Night Fision contain green tritium - a form of hydrogen that emits a continuous light source when batteries or electricity cannot. For low-light and night use Night Fision Tritium Front HK Perfect Dot Night Sights have an added florescence layer which provides the added visibility without added weight or bulk. These sights easily install using a simple sight removal guide; you don't even need a coin to remove these Night Fision Illuminated Night Sights. Night Fision has crafted these sights to withstand all kinds of abuse making them some of the toughest on the market. Take these Night Fision Perfect Dot Tritium Front HK Night Sights out on the range or on a hunt and you'll gain an advantage in the field or at the very least a dulling of your current sights. Specifications for Night Fision Perfect Dot Tritium Front Night Sights w/ Square Notch Rear for HK: Manufacturer: Night Fision Gun Make: Heckler & Koch Color: Black Sight Style: OEM Height Fabric/Material: High Quality 4140 Steel Gun Type: Pistol Front Blade Height: 0.168 in Rear Blade Height: 0.27 in Height: 0.253 in Illumination Type: Tritium Illumination Color: Green Condition: New Features of Night Fision Perfect Dot Tritium Front Night Sights w/ Square Notch Rear for HK: Perfect Dot Night Sights with added daytime florescence Brightest Tritium Night Sights on the market CNC Machined out of high quality 4140 steel Black Nitride coating used to improve wear and corrosion resistance Installation: Contact Professional Gunsmith Built with Swiss Tritium Package Contents: Night Fision Perfect Dot Tritium Front Night Sights w/ Square Notch Rear for HK Night Fision HAK-126-003-OGZG: Perfect Dot Front Night Sights w/ Square Notch Rear for HK Orange Front w/ Green Tritium - Black Rear w/ Gree fits VP9 VP9SK .45C .45C Tactical P30 P30L