the 54cal is a 1" barrel, this one is for a 15/16th 45-50caliber TC.
Just entertaining offers at the moment.
I've got an extra 50 cal Green Mountain Barrel for shooting sabots, so I'm still interested.
I'll have to measure it to make sure it's 15/16's. I have no idea what the Stocks go far, that's why I'm asking ??? Is there anything you are looking to trade far ?