The Josef Unger in Graz 16-gauge is a used side-by-side double listed as an antique long gun. One barrel is smoothbore and measures 0.665 inch at the muzzle with a 2 3/4-inch chamber, while the other is rifled, bored 0.575 inch, and fires a short shell of about 2 inches. The Damascus-pattern barrels carry a 95 to 97 percent finish, and the stock has sharp, excellent checkering. A bullet trap in the butt, an adjustable single set trigger and an iron rear V-notch sight complete the setup.

This double suits a collector or a black powder shooter who wants an antique side-by-side rather than a modern shotgun. The listing states it is offered as a black powder gun and is not meant for modern smokeless ammunition, so that is the only load to consider. Read your state's current seasons and legal firearm rules before you take it afield.

Key features

• 16 gauge side-by-side double, antique long gun
• Smoothbore and rifled barrels, 2 3/4-inch chamber on smoothbore
• Damascus-pattern barrels, 95 to 97 percent finish
• Adjustable single set trigger for the rifled barrel
• Used; listed for black powder use only

Firearms ship to a licensed FFL dealer you name, where you complete Form 4473 and pass the background check.