I have a MK IV 22/45 lite and after putting a TandemKross brake, trigger and blast shield in it along with their base pads for the magazines, it runs great with everything but CCI SV. I put a JPoint on it with an 8 MOA dot so I don't know how accurate it really is but it's great for steel challenge and such. I traded my old Buckmark for it right after I shot one, I just knew I had to have one. Great pistol.
