Originally Posted by nimoZ
Yes, I think it could be perfect.
That would make the button and the set screw to be just shorter than the guiding tab on the inside.
- The front sidewall + guide of my PMAG is just less than 3/16", add your button's 11/32" and you get 17/32", which gives slightly more material than 1/2"
Edit: Don't know about the new stubbies based on a later model pmag, but I would expect the wall and guide to be very similar.
Thanks for your input. I'll change The KIT B to 1/2" set screws on our next run.