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
Pennsylvania Rifle Works (Philadelphia, PA) Percussion Over-Under Combination Gun
![](/umbraco/ImageGen.ashx?image=/media/6801/00116_d2.jpg&class=mainImage)
![00116_d2.jpg](/umbraco/ImageGen.ashx?image=/media/6801/00116_d2.jpg&class=galleryImage188-125)
![00116_d1.jpg](/umbraco/ImageGen.ashx?image=/media/6796/00116_d1.jpg&class=galleryImage188-125)
![00116_d3.jpg](/umbraco/ImageGen.ashx?image=/media/6806/00116_d3.jpg&class=galleryImage188-125)
![00116_d4.jpg](/umbraco/ImageGen.ashx?image=/media/6811/00116_d4.jpg&class=galleryImage188-125)
![00116_d5.jpg](/umbraco/ImageGen.ashx?image=/media/6816/00116_d5.jpg&class=galleryImage188-125)
![00116_d6.jpg](/umbraco/ImageGen.ashx?image=/media/6821/00116_d6.jpg&class=galleryImage188-125)
![00116_d7.jpg](/umbraco/ImageGen.ashx?image=/media/6826/00116_d7.jpg&class=galleryImage188-125)
![00116_l.jpg](/umbraco/ImageGen.ashx?image=/media/6836/00116_l.jpg&class=galleryImage188-125)
![00116_r.jpg](/umbraco/ImageGen.ashx?image=/media/6841/00116_r.jpg&class=galleryImage188-125)
Many combination guns were made with swivel barrels that allowed a choice of calibers. This engraved gun features a swivel breech and a back-action percussion lock.