The Lyman Great Plains Rifle .50 Cal is a usa-made single-shot rifle chambered in .50 Caliber, introduced in 1989. Primary use: hunting, target. Type: Rifle Action: Single-Shot Caliber: .50 Caliber Capacity: 1 Year introduced: 1989, USA Weight: 104 oz Overall length: 43.5" Status: Active Intended use: hunting, target