The Knight Disc Extreme uses a novel disc-based 209 primer ignition system that encloses the primer in a plastic disc for reliable ignition and easy extraction after firing. Stainless steel barrel, adjustable trigger, and thumbhole synthetic stock. Exceptionally weather-resistant. Type: Rifle Action: Single-Shot Caliber: 50 Cal Capacity: 1 Year introduced: 2003, USA Weight: 112 oz Overall length: 43" Status: Active Intended use: hunting, whitetail, elk