A compact, typically single- or double-barreled handgun, small enough to be concealed in a pocket, is often associated with close-range self-defense. Characteristically featuring a short barrel and grip, these firearms are recognizable for their easily concealable design and limited capacity, typically firing .22 Short, .22 Long Rifle, .38 Special, or .45 Colt cartridges. A famous example is the Philadelphia Deringer, historically linked to the assassination of Abraham Lincoln.
Historically favored for personal protection due to ease of concealment, these handguns played a role in the American Old West and continue to be collected and, in some cases, utilized for concealed carry. While compact size offers a concealment advantage, the limited ammunition capacity necessitates precise shot placement. Modern variations sometimes include enhancements like improved sights and materials, while retaining the fundamental compact design.