There are some serious changes to the file in CA. Particularly, the GUNS_M_PV_OPTION.rez no longer exists, instead the the GUNS_M_PV_AR.rez contains all the scopes for for guns with perm scopes and with the scope attached to the gun in the .LTB files. Also the guns have gendered versions now. So if you mod a gun, you need to chose a mode to match your players gender. Cm files seem to be for males and Cw seem to be for females. I still haven't found the mod scopes.