Purchased to replace the scopes on my M&P with a set of tritium scopes, worked great for attaching new scopes but I had to use a steel die to get the standard front M&P look to let. Considering they are used with a hydraulic press I wouldn't mind as it's brass and not really meant to remove anything like that. I would buy another one if I wear these on the street. For those who only work on their own stuff once in a while, that would be great.