[DonVoigt]

Seriously,
it is not an "issue"!

It is clear, at least to me, that most of the "stopping" or contact is occurring at the toggle/rear frame outside interface.

There are at least three areas that could "touch", the outside rear frame, the inside area shown in the first picture, and the round circle most often seen where the firing pin guide contacts the rear.

Remove the contact at one point, and it will likely move to the next. JMHO.