HW98, HW80 and HW95 but not while HW continues to write the 'warning' on the action.

Many other manufacturers don't feel the need to do it.

Mr Weihrauch by all means put the warning on the action but position it underneath (hidden by the stock). That way when Mr Average decides to do a bit of tinkering and dismantle everything, he takes off the stock, sees the message and heeds to warning.