I just did some measuring of the case near the 510. The top of the case is 2 mm thick, the recess is 1 mm deep, that only leaves 1 mm if those protrusions in the well and the rails on the inside where the 510 slides into place are removed. I was just inside mine a couple of days ago concerned with the 510' insulator. I suspect those rails that the 510 fits into are supported at the case above the fire button, I paid no attention to that when I was inside. Then is the battery cradle going to clear? While quit possible to do it looks challenging. I would like to change mine too but will wait till it's necessary I guess.