The black one is the stock screw, the 8mm is next to it and it was already all the way in when I took it out so the longer screw should work good and still have a little adjustment room if needed. sorry for the lousy pic but the only camera I have is the one in my tablet.
Good info. Gonna' get me some of those screws for my two Strikers and VMX and some for my bud with a couple of these guns. Thanks.