Also as I recall. Colt was the first to come out with the full underlug barrel. Some enterprising individuals made up the cougers and also what they called smolts or smith and colt combos.
Soon the manufacturers came on board and introduced the L frame, the gp100 and other fully lugged barrels.
All history now and nobody uses these obsolete old wheel guns. 🙄

Its not always easy to do the right thing, But it is always the right thing to do.