[xoxoxoBruce]

Originally Posted by Happy Monkey

Any shots of the mechanism to choose the barrel?

No, they aren't giving anything away. They only briefly describe two guns, a three barrel .410 and a four barrel, two 97.3 x 74R and two 12 gage.

Possibly the smallest three-barreled gun ever built, in .410/.410/.410, with H&H-type sidelocks, one single trigger firing all three barrels in the sequence: right-left-bottom. Weight 2,4kg (5.2lbs).
It was a great challenge to fit a mechanism of such complexity into such a tiny action.
The trigger plate is only 12mm (0.47-inch) wide. On this triggerplate the single-trigger mechanism for all three barrels, as well as the lock for the third bottom barrel, must fit—and function correctly. Apart from crafting every single part from the full material, the design of this gun also involved a thorough reengineering of each component, and the relocating of the springs inside the action.
From a Set of Two shotguns dedicated to two birds (mallard and quail), we proudly present “The Quail Gun”—in .410/.410/.410


We designed and built this extraordinary four-barrelled firearm to a client´s specific request. A side-by-side double rifle (cal. 9,3/9,3x74R) was paired with an over-and-under shotgun (gauge 12/12/76) to become one firearm.
The customer required that the Vierling shoot four (plus two) times in sequence, with “hot” barrels; a robust, reliable mechanism that would enable intuitive quick handling.
As a gunmaking complication our four-barreled Vierling is unsurpassed: H&H-type sidelocks, with automatic ejectors, yet responsive and well balanced. It took an enormous effort to design and build, to join and regulate the rifle barrels two-times-two so they would shoot together to the same point of impact, in sequence—first the 9,3 barrels, then by pushing the barrel selector forward, the shooter continues with the 12-gauge barrels. Automatic ejectors for the shotgun barrels facilitate quick reloading for another two shots.