SIG Sauer system
The SIG Sauer system is a type of action found in self-loading handguns.
It represents a design which optimizes the cost of production of handguns while instilling high levels of accuracy and dependability.
It is the basis for several SIG Sauer, Inc. designs which have been widely adopted for police, military, and civilian use and is the action used in the M17 and M18 sidearms of the United States Armed Forces.
This type of machine allowed for a greatly reduced cost of manufacture of whatever part it is used to produce.
As a result, the Luger (made by Deutsche Waffen & Munitions, or DWM) was one of the most expensive handguns available anywhere in the world.
With the development of the new machinery, SIG was able to produce a simplified version of the P210 handgun which became the P220, and later the P225 (adopted as the P6 in Germany).
The Browning 1910 design consists of a short-recoil action in which the barrel and slide of the handgun ride on a steel frame.
When the bullet first starts to move, the pressure in the cartridge case and barrel rises to more than 16,000 pounds per square inch (110,000 kPa).
This causes the ribs on the top of the barrel to disengage, at which point the slide continues to move rearward to eject the empty cartridge case.
Once the case has been ejected, the slide and breechblock that it contains have now moved past the area of the magazine.
When examining the design of the Browning 1910, it can be seen there are a number of parts that introduce inaccuracy in the movement of the barrel as it cycles.
This last refinement of the Browning design required using expensive highly alloyed steels which was not economical until the 1970s, when its combination with the solid cam became known as the SIG Sauer system.
It first appeared in the United States in the Browning BDA handguns made in .45 ACP and 9×19mm Parabellum calibers.
Due to export restrictions, SIG formed a partnership with the German company J.P. Sauer & Sohn in order to manufacture their new series of handguns.
Since 2000, the two SIG Sauer companies are independently operated but are both owned by Luke and Ortmeier Gruppe of Germany.
