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drilling gun for 1 piece mount pin?

I have done that on a few rifles................but............. you have to make sure there is nothing that you will mess up drilling where you need the pin. I have even pulled the action off to make sure I'm not causing an issue by drilling. And it takes very little down pressure with the pin to do its job. Put a little blue threadlocker on the threads of the lock pin and it won't back out.