Original Item: The tumbler cocks the firing pin and acts as sear. The cocking indicator rod acts as the pivot for the tumbler. These SELECT Grade tumblers are British made but unmarked. They look unissued, with very nice bluing. All have been checked for fit on an original British manufacture cocking indicator rod.
The tumbler is one of the parts most frequently requiring replacement, and since they won’t be around forever, now is a good time to get a spare.