The Knight Disc Extreme uses a unique disc primer system instead of 209 or musket primers. Stainless steel bolt, 24-inch barrel, and synthetic stock. The disc system delivers more reliable ignition in wet conditions. Type: Muzzleloader Action: Bolt-Action Caliber: .50 Cal Black Powder Capacity: 1 Year introduced: 2002, USA Weight: 56 oz Overall length: 41" Status: Discontinued Intended use: Hunting, Muzzleloader Season