the frizzens on most flintlocks from factory are not hardened too good.the lyman frizzens are better.on my tc hawkins .50cal, i bet i have gone thru 3 frizzens from factory.thompson warranty covers it but i dont suggest you get one .go to RMC SPORTS and they have a extra hard frizzens or you can use the lyman ones but you may have to take dremel tool and grind the edge a little to make work .i will post the rmc sports info.cayugad most likely can help more on this,only my 2 cents.take care