I have a 12 Onyx and in a December pheasant hunt the safety got very stiff. Because of this I just took it apart and cleaned it out thoroughly... and now I can hear something sliding in there. Cocked, not cocked, assembled or not... There was a bunch of ND red dust, blue glacial clay and other dirt in every corner.
My hearing is not great and I suspect it will not be long before it makes no noise at all...
