Ade Advanced Optics Bertrillium RD3-013 Red Dot Reflex Sight for HK USP Pistol

Comes with mounting plate that replaces the rear sight dovetail of HK USP and also a standard picatinny mount. The HK USP dovetail has two popular width, one is 12mm, another size is 10mm. This plate fits 12mm dovetail, it does NOT fit the 10mm dovetail unless you grind/file it. Please MEASURE before purchasing. Below is a list of HK USP models come with both size 10mm and 12mm dovetails. HK made the different sizes over different production run. Need to confirm before purchasing. . New advanced battery technology gives up to 2000 hours on bright setting and up to 30k hours on Low setting with a 1632 Battery(Included) Ade Advanced Optics model RD3-006, RD3-009, RD3-012, RD3-013, RD3-015 are designed to fit the slide/footprint of mounting plate made for Vortex Venom, Burris Fastfire, Meopta, Docter, Insight, Eotech MRDS, Sightmark Minishot. Therefore Ade red dots are compatible for varieties of handguns with appropriate plate that is made for any of those brands. Promotes rapid target acquisition while providing a precise point of aim; getting shots down range and on target fast. Top load System, no need to Remove the sight to change the Battery and re-sight in to waste ammo. 4 MOA dot.Red dot DOES NOT auto power off. It stays on til use manually power off. It has multi brightness level with one adjustment button. Every time you turn on the dot it stays the same B rightness level last time it was turned off. The lowest setting is invisible by human Eye that is for using with a night vision