When I got my P90TH, I bought two extra mags. They all had the metal followers.
When I saw the notch in my frame, I called Ruger and they told me the same thing about not affecting anything.
However, I then replaced all springa and followers with Wilson Combat ones. I had to cut off a coil or so off each spring, but they fit well. After changing them out, I didn't get any more "frame dig".
I think i got them at Brownells or Midway.
I'll see if I can find the thread where I asked for help from Iowegan on the subject...
Last edited by Aqualung; April 4th, 2017 at 04:19 PM.