I did order and install a C&H steel plate for my Holosun 507C optic on my M&P 10mm 2.0. It was a quick and easy installation, and the plate fit both the optic and pistol perfectly. I followed C&H's online installation instructions just to be sure (including some new blue Locate on the fasteners). However, I did notice that while zeroing in the optic the reticle was flashing...ooops, time for a battery change after only 4 months. I installed a new CR1632 battery and all is well. I did take the suggestion from one of our fellow Forum members to put a little blue Loctite on the tiny screw that secures the battery tray. I'll take the 10mm to the range later this week to check everything out.