Brophy gives a total of 55K+ for all the Hunter boxlocks, so that jives with Houchins. However, I've always wondered whether that total included the Rangers etc. I owned a Ranger-marked Fulton, SN in the 156K range which would be 1937 if in the normal Hunter SN sequence, which supposedly included all Hunter doubles. Thus, maybe the total does include the guns made for Sears and others.
On the other side of the ledger, I see enough Fultons and Fulton-marked Rangers to make me wonder. In comparison, there were supposedly 250K+ Lefever Nitros produced. In my experience, they are not 5x as common as the Fultons.
