We have looked at one of Adolf Furrer’s M1919 submachine guns before, but this one is a much different implementation. The model 1919 Furrer designed was basically a chassis for converting a Luger pistol into a carbine. He lengthened the barrel, added a booster to help it cycle, and replace the gripframe with a magazine well for a subgun-type magazine. The one previously featured here was fitted to a wood stock to use as a shoulder weapon, but this one is a double-barrel design intended to be fired from a mount.
This example (bearing serial number 1, incidentally) has a very solid mounting point located between the barrels just ahead of the chambers and a pistol grip with detachable shoulder stock. It does not have much in the way of a convenient place to hold the front of the weapon, further suggesting that it was intended to be fired mounted. This type of application in 1919 could have been useful as an observer’s gun on an aircraft or mounted to a ground vehicle.
It uses two curved magazines of unknown capacity (probably 40 rounds, I would guess), and is chambered for the 7.65mm Parabellum cartridge. Where the single-barrel shoulder rifle Furrer mounted the Luger action with the toggle to one side, this design has the toggle actions mounted facing downwards. This would probably be a fairly convenient arrangement for controlling ejecting brass, and it also makes the magazines easy accessible atop the weapon.
I have not found much other information about this design – it was not adopted, and probably not manufactured in any significant quantity. Furrer would go on to develop the Swiss LMG-25 a few years later, which was more successful (and also a toggle locking system).
Thanks to the National Firearms Centre in Leeds, we have a whole slew more photos of the gun. I do apologize for the photo quality; these were taken a couple years ago.
Here are a few photos of the magazine specifically: