Marlin inline muzzleloaders were introduced in 1997. They are stainless steel. Available in .50- or .54-caliber. Barrel 22" long. Adjustable Marble rear sight, ramp front sight with brass bead. Drilled and tapped for scope mount. Black synthetic stock, with molded checkering. Weight about 7 lbs. Discontinued. Not particularly easy to take down for cleaning.