Tags: Weapon.
The Henrion Dassy & Heuschen double-barrel revolver was a type of revolver with two stacked barrels and two concentric sets of chambers each serving its own barrel. They were fired by a single hammer which had two firing pins. The chambers were staggered such that the gun fired only round at a time. These revolvers were based on a 1910 patented held by the Belgian firm of Henrion Dassy & Heuschen (HDH) and were made in various calibers.