I watched MPA open guns shooting outdoor dynamics ammo and make 172ish PF at Nat’s this year. Not from my gun personally, I run reloads, but several of the team guys run outdoor dynamics 9major ammo.
My previous open gun had a cheely aggressive grip. I had a MPA S2 and currently run the S3. The S3 is a little more aggressive than the Cheely. And the edges have kept their edge/sharpness very well. Can’t really tell any difference between brand new and now after almost a year of match abuse.