Comes with mounting plate for HK USP and also a standard picatinny mount. The picatinny mount is for attaching to any standard picatinny/weaver 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. USP Tactical 9mm (need to check dovetail size). (need to check dovetail size). The mount for HK does not fit. USP Compact rear sight cut depth is. 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). Top load system, no need to remove the sight to change the battery. The red dot is compatible with Ade handgun mounts for Glock Barreta HK UPS SW MP SIG P226 Springfield Ruger LC9 LC9s LC380 SR9 SR22 SR40 SR45. Can also be used with a long range rifle scope for that perfect Backup System. Red dot DOES NOT auto power off. It stays on til use manually power off. It has multi brightness level with one adjustment button. To turn the brightness up and one adjustment button to turn the brightness down. Hold the UP Arrow to power on. Hold the Down Arrow button to power on/off. 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. Come with a mounting plate for picatinny rail. Additional mounting plates for hunguns sells separately. 4 MOA dot, light and compact. 1.75″ Length x1.25″ Width x1.15 Height. Shock proof, Fog proof and Waterproof for 30 minutes under 4ft water. As such, the more you save the more we make. Please allow up to 24 hours for a response. If you give us the chance, we will make every effort to make it right for you! We strive for five stars from you in feedback – and work hard to earn it. Track Page Views With. Auctiva’s FREE Counter.