I've been playing with it on and off few a few years now since I got it. I drilled and tapped the frame to mount a custom picatinny rail I made. I didn't really need a rail, but for some reason I have 4 accessories and I don't own any guns with a rail. Also, that little flat part was just begging for some action. I did a VQ sear, polished all the internals, mk2 bushing to remove that stupid mag disconnect, and drilled/tapped the trigger for a set screw to remove the take-up. Oh, I also blasted and cerakoted the pistol with burnt bronze. I think it turned out okay. I plan on doing some machining on the sides to change it's profile, maybe loose a little weight. It shoots great suppressed, very balanced.
One thing I do need to do is get some rail plugs for the scope holes. The pistol came with a set, but I'm stupid and lost them. Anyone have a source for them?