TC Encore Pro Hunter Katahdin 209x50 Muzzle Loader Barrel- The Katahdin is a 20'' stainless fluted barrel with adjustable peep sights. It fits Thompson Center Arms Encore and Pro Hunter frames. Drilled and tapped for scope mount. Katahdin muzzleloader barrels use the same forends as TC Encore and Pro Hunter 209x50 muzzleloader barrels.