Very Rare and Unique Nazi multi-shot 5.6mm (.22 cal) belt buckle gun. There is a long and varied history of these non-standard guns know as SS-Waffenakademie Koppelschloßpistole (Belt Castle Gun). Invented by Louis Marquis while in a WWI POW Camp and received a patent for a similar design in 1935.
According to our research the bizarre Koppelschloßpistole (belt buckle pistol) was developed by the SS-Waffenakademie at Brünn (Brno). there were at least two versions for wartime use. One was a two barrel design in 7.65mm and the other was a 4 barrel design in .22 cal or 5.6mm. The special belt buckle was fitted with a spring loaded cover. When activated (e.g. by pressing a catch on the buckle or by pulling a string when the wearer was ordered "hands up!"), the cover would open up, revealing the barrels loaded with cartridges. These immediately fired on some test model or could be individually fired by the triggers. The belt was intended to be issued to agents as a last-ditch self-defense weapon to avoid capture. In January, 1938 Marquis receives a patent for " as a container qualified castle buckle for belt and belt ". Only twelve (including prototypes and test models) were reportedly manufactured, and they were probably never used in combat.
Functioning: By simultaneously squeezing the top and bottom levers on the right side of the picture the barrels (made from a solid block of steel) is spring loaded to swing open, pushing up the front cover and is ready to fire.
Pressing the triggers discharge the gun or by pressing on the Barrel Release Lever one can push the barrels back into the case, cocking the triggers and proving for the reloading of the gun.
The Eagle (Alder) on the front plate appears to be one from the officer's cap. This really brings attention to the belt buckle and makes it unusual with one familiar with the German WWII buckles. It obviously was not designed to be worn in combat but perhaps under the great coat where it could be concealed until time of need.
You can see the serial number 5/C on most of the major parts of the gun. On the left side is the lever you push to put the barrels into the load/ready position. On the right side is a lever on the top and bottom which pushed simultaneously bring the gun into battery and ready to fire.