various calibers (45, 50, 54) some smooth bores but most of them rifled with 1 in 60 in twist for round ball. flint locks and their reproductions are class as antiques so no firearm licence needed. the weierd looking flint locks that i designed uses the mish metal from the magnesium fire starters. these are super fast ignition. as soon as the hammer starts to move, theres fire in the hole. These barrels are all 416 stainless steel. i have 54 cal rifled in titanium that weighs 2 1/2 lbs. these should be in person sales.