I bought a set from Eric Brooks for my 17HMR but never got round to fitting them, sold it recently and bought a .22 Varmint. I've ground one bolt down and they fit, the finish is a mat grey and matches the Cz trigger guard. I found the standard Cz screws had very thin slots and were easy to chew up, infact my rifle was brand new but one of the screw heads was marked slightly (a blind man on a galloping horse would be glad to see it though, it wasn't much of a mark)