[Ron Wood]

Gerben,
That is a neat find. I would tend to go along with JTD's observation. I have often wondered how unit markings were applied wiithout distorting the grip. It doesn't take much of a dent to make insertion of the magazine difficult. A tool like this would be valuable to unit armorers. The same function could be performed with the right size round rod but a tool like this would be much more handy.
I have no doubt that it is also quite useful for repairing a bent frame.