The original pocket pistol that gave its name to an entire class of firearms. A tiny, large-bore single-shot percussion pistol designed for concealed carry. John Wilkes Booth used a Deringer to assassinate President Abraham Lincoln at Ford's Theatre on April 14, 1865. Type: Pistol Action: Single-Shot Caliber: .41 cap Capacity: 1 Year introduced: 1848, USA Weight: 26 oz Overall length: 7.4" Status: Discontinued Intended use: civilian