J,
I have the same EMF revolver, but don't have the butt stock. Can you take some close-up pictures so I can see the shape of the connector, and how it's cut? (Is dismounted too much to ask?)
I'm not saying yours isn't right, but the one with my revolver at time of purchase had a non-black finish to the brass, and the butt and grip wood had the same stain color. I want to find a proper butt for mine, but might consider modifying a connector intended for a smaller revolver. Regardless, need a permanent reference, like a pic.
Bought mine three years ago at the Novi antique collector's show. Guy who sold it to me had just bought revolver and stock 20 minutes before from another table. He only wanted the butt to "display" with the "original" 3rd dragoon he displayed on his table. He wanted north of $5G for the dragoon. He was thrilled to immediately sell the ASM revolver, get it away from his table. Two months later, very next show, seller does not recognize me, and butt is still on his table. Asked him if he wanted to sell just the butt. Giving me "a great deal", he only wanted $900.
I don't know, maybe the butt accompanying my revolver at time of buy was not correct or even an ASM. Unattached butt had no markings. I never saw it mounted to my revolver.