If anyone is having any problems with their mtg plate coming loose let me know. I had the single screw snap on two separate occasions. The lower half was loctited in the slide and something I could not get out. Sent it back to have the screw removed without damaging the slide, twice. Found a local Gunsmith that did excellent work mounting the plate with 4 screws into the slide. He left it so that if I wanted, I could remove the screws and install my rear sight for Production.