The Galleries
- Robert E. Petersen Collection
- Ancient Firearms
- The Road to American Liberty
- Seeds of Greatness
- The Prospering New Republic
- A Nation Asunder
- The American West
- Innovation, Oddities and Competition
- Theodore Roosevelt, Elegant Arms
- World War I and Firearms Innovation
- WWII, Korea, Vietnam and Beyond
- For the Fun of It
- Firearms Traditions for Today
- William B. Ruger Special Exhibits
- Freedom's Doorway
Winchester (New Haven, CT) Model 12 Black Diamond Trap Slide-Action Shotgun
Designed by Thomas Crossly Johnson, Winchester's popular hammerless Model 12 was manufactured continuously from 1912 until 1980, with a total production of 2 million guns. These were offered in a variety of grades and gauges, ranging from military and police models through the deluxe Black Diamond Trap and Pigeon Grade models. This Black Diamond shotgun was produced in 1953.