After the First World War, due to the signing of the "Versailles Peace Treaty", Germany was subject to many restrictions on the design of weapons and equipment. This restriction is not limited to heavy weapons such as ships, artillery and tanks, but also light and heavy machine guns. Even the development of submachine guns is on the list of supervision, including the MP.19 submachine gun of Rheinmetall, which was born in 1919.
In 1929, in order to avoid the restrictions of the "Versailles Peace", Rheinmetall acquired the Solothurn Arsenal in a low-key manner, and secretly gave a secret to this MP designed by the designer Lous Stange. .19 Submachine guns were refined and improved. In 1930, Rheinmetall finally produced a new submachine gun based on MP.19, and named it "S1-100" submachine gun, also known as "Steyr-Solothurn" (Steyr-Solothurn) The new submachine gun S1-100. The total length of the
S1-100 submachine gun is 850 mm, the barrel length is 200 mm, the empty gun weighs 4.25 kg, the weight of the 32-round magazine is 4.48 kg, the rate of fire is 600 rounds per minute, and the muzzle velocity is 410 meters. /Sec, the effective range is 150 to 200 meters. The gun uses a recoil automatic operation method, using 32 or 20 rounds of magazines, the magazine slot also has a magazine loading function, you can load and lock the empty magazine from under the magazine slot, and then use the ammunition capacity from above 8 rounds of magazines are loaded. The sight is a mechanical sight, which is composed of a front sight and a ruler. The ruler of the latter is divided from 100 to 500 meters. The overall performance is one of the best submachine guns before World War II.
In the early 1930s, the Swiss side proposed to Steyr Company the intention to purchase submachine guns. At that time Steyr Company made improvements on the basis of S1-100 out of the needs of the purchaser, and finally this kind was born. Very special S17-100 submachine gun. Compared with the original gun, the return spring, buttstock and even the trigger of this S17-100 submachine gun have been adjusted. If you look at it from the outside, the biggest change of the gun is the installation of a heavy tripod like a heavy machine gun. The wooden buttstock has also been changed to the same grip structure as a heavy machine gun.
This magically modified version of the S17-100 has an empty weight of about 3.6 kg and fires a 9×25 mm Mauser pistol. The length of the gun is 61 cm, the barrel length is 20 cm, the muzzle velocity is 419 meters per second, and the rate of fire is about 500 rounds per minute, using 30 rounds of magazines. From the perspective of range and firepower continuity alone, there is no need for this gun to add a cumbersome tripod to itself. Although this weird design may be used on vehicles such as light reconnaissance vehicles, it is for this rate of fire. For automatic weapons, the mobility and flexibility are completely restricted to the tripod. No wonder no other country’s army has ever been equipped with this thing except Switzerland.
