Quote Originally Posted by NightCat View Post
That top left brass looking rounded one.

i'd use that, get it nice and hot, stick it into the area then do a small flick down and see..

I practiced on a PMAG before I ever touched one of my pistol frames with an iron.
That crossed my mind, I may need to file it a bit smaller, it's larger than the pic makes it look, I'll likely bust out a pmag for practice.