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....
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....