I agree with your post but I am very wary of what will actually be defined as "permanent" since the law does not spell that out well at all. Guess who gets to be the test case? The 1st person arrested with a mag block. Then you get to see if a jury of your peers decides if your epoxy job is good enough to mean you broke no laws, or congrats now you're a felon, pay $5000 and lose all your guns to boot.