Norwegian Double Barrel Mailman's Knife (1846) ( lemmy.world )
It has two muzzleloading smoothbore barrels, with a percussion cap hidden under each top ear of the crossguard and a folding trigger in the body of the grip....
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/23/52/23524da0d6b8ffba4840ff98d962d2ae33d72d6f57e118fd0e423c0bbab1524d.jpg)
It has two muzzleloading smoothbore barrels, with a percussion cap hidden under each top ear of the crossguard and a folding trigger in the body of the grip....