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://lemmy.world/pictrs/image/be15477b-1553-42b0-ac14-42ff4eee96c1.jpeg
An 1846 Postførerverge – a double-barreled blade/gun issued to Norwegian postal employees after a rash of deadly assaults on rural postal workers. Those were made from 1846 until 1854, with a total of 152 being manufactured.
https://lemmy.world/pictrs/image/a45fd326-112c-46cd-a4dd-e407342faff0.jpeg
Ian's Video: [7:50]
https://youtu.be/WyrE3FSU01w?si=