I have a set of hilver mounts that have traditional flat head screws, they are not only a bit too worn but also have a tendency to come lose under firing. I want to replace them with equivalent hex screws, but have no idea where to source an identical fitting screw, that is, length and thread.
ps. it's the hilvers where the screw head sits on top of the upper ring, they are not counter-sunk down into the ring.
can anyone help?