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
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- Hollywood Guns
Parkers Snow Co Rifle Musket; Miller Model 1861 58 Caliber Conversion
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Thousands of obsolete muzzleloaders were converted to breechloaders during 1865-1867. This conversion breechblock was opened by lifting a release latch, which allowed the block to swing upward. The Meridan Mfg. Co. altered approx 2,000 Model 1861 Muskets using the system patented by William H. and George W. Miller.