The Galleries
- Robert E. Petersen Collection
- Ancient Firearms - 1350 to 1700
- Road to American Liberty - 1700 to 1780
- A Prospering New Republic - 1780 to 1860
- A Nation Asunder - 1861 to 1865
- The American West - 1850 to 1900
- Innovation, Oddities and Competition
- Theodore Roosevelt and Elegant Arms - 1880s to 1920s
- World War I and Firearms Innovation
- WWII, Korea, Vietnam and Beyond - 1940 to Present
- For the Fun of It
- Modern Firearms - 1950 to Present
- Hollywood Guns
Langenhan FL Selbstlader pistol
Semi-automatic pistol design that was exclusively for German military service. The locking system, which included a screw mounted breechblock separate from the slide, had shortcomings in actual usage. Wear and tear often resulted in the retaining yoke and screw jumping free, allowing the breechblock to blow straight back into the shooter's face.