Let me add a little more info and then I'll take a shot at what fits best. The barrels are 29 1/2 inches. A 3-inch 12 gauge shell seems to fit and the gun closes on it. The engraving on the sides include what appears to be pheasants (long tail) on one side and maybe quail (short tail) on the other side. There is also engraving on the trigger guard that appears to be a deer.The gun is very tight when closed.