I have two of these with the brass reciever. One is a 54cal, and the other is a 36cal.
Both have brass funiture and what appears to be curlly maple stock and fore arm.
They both shoot very well with round balls. I have not tried conical as they are both 1:66 twist.
I have only seen one other Mowery, and that was at a gun show. It had a metal fore arm. The dealer wanted $450.00 for it but I was not interested in the looks of it so I left it with him.