Contact The Mountain Man in Manitou Springs,CO. Normally you buy one that is long and has one end on it. Then also purchase the other end . Cut it to the length you need and glue the end .
I like the nylon ones vs the fiberglass or wood.
Probably Track of The Wolf carries them also..
"Track of the Wolf" is the go-to place for muzzle-loading rifle parts, pieces, and accessories.
if you want a stock TC issued rene stick Ebay has them all over the place.
never mind! read your edit.