HKP - HK UMP, USC, - Flat Trigger With our new Flat trigger you will  improve the aesthetics of your firearm and will also give shooters a lower position on the trigger, which will increase leverage for a smoother, more consistent pull. Our flat trigger has spaced out serrations at the face of the trigger for a far superior grip. We also added edge breaks on each side of the trigger so we can ensure that the serrations will not cause discomfort while in action. Each trigger counts as one US made compliant part needed for builds & conversions for US compliance of 922R. Compared to a factory HK trigger this trigger will make the pull and feel much better than a stock factory trigger. A huge improvement over a stock HK trigger. Qualities & features of each enhanced trigger:

-Made from 6061 aluminum