The most powerful American Derringer — an over-under stainless derringer chambered for 45-70 Government, intended for Alaskan bear country survival use. Upper barrel is 45-70; lower is 410 shotshell. Type: Derringer Action: Break-Action Caliber: 45-70 Govt Capacity: 2 Year introduced: 1985, USA Weight: 16 oz Overall length: 6" Status: Active Intended use: hunting, survival, backup