Need help please???? I have the glock 43x mos and I'm trying to mount the crimson trace ct rad micro to it.no plate required it's a direct fit..it came from a friend I traded with and he filed down the screw that I need can someone tell me if I can just get a screw from the hardware store that has a starbit head or Allen wrench head ? I'm not sure if there strong enuf or if the thread pattern is correct ?I tried a M4 ×8 from the hardware store and it seemed to have a lot of wiggle while screwed over 3/4 the way in the glock 43x mos??is there a specific type of screw ???