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
Crown Jewels
Nine of the finest from the Petersen collection, including the Parker Invincibles, Annie Oakley's guns, the Devil's Shotgun, and the best Winchester ever.
- Annie Oakley's F. Hambrusch Shotgun
- Annie Oakley's Stevens Pistol
- Holland & Holland Side by Side Best Gun Shotgun
- J.C.A. Brun Double Barrel Percussion Shotgun
- John Olin's Winchester Model 21 Shotgun
- Parker's Invincibles: The Finest American Shotguns (1 of 3)
- Parker's Invincibles: The Finest American Shotguns (2 of 3)
- Parker's Invincibles: The Finest American Shotguns (3 of 3)
- Purdey .600 Nitro Double Rifle
- Szecsei & Fuchs Double Barrel Bolt Action Rifle