i watched gunbroker last year and got a thompson center 50cal flintlock hawkens for 350.00......I just got a renagade(tc) compleat stock flintlock 50 for 130.00 on ebay and yesterday i got the barrel from the same seller for 175 (it was 180something shipped) i got a wedge pin for 10......I e-mailed green mountian and asked if the had a 54 renagade flint barrel and they said they didn't so i grabed the factory barrel. you should be able to get a compleat flintlock tc hawkens and green mountian has 50 cal flintlock hawkens barrels in round ball twist on there website for under 300 shipped......my buddy got a 54 great plains flint and its deadly he could hit that plate no problem......