Bkat
Blackhawk
As far as the bolt stop pin on a Mark III is concerned, there should be no problem in using a punch to help remove it. In fact, the Ruger manual says you can use a "plastic hammer and wooden dowel" if it won't come out manually. I've had to use a drift punch and rubber mallet, with a couple of cleaning patches over the head of the pin, on two or three Marks when it wouldn't pull out. I've never left a scratch on any of them.
Bkat
Bkat