Spangenberg & Sauer The M1879 Reichsrevolver, or Reichs-Commissions-Revolver Modell 1879 and 1883, were service revolvers used by the German Army from 1879 to 1908, when it was superseded by the Luger.

Although the design was dated, the weapon was extremely robust, and they were still used through World War I and until 1945 by the security of the customs administration.

The caliber was an indigenous 10.6×25mmR with a medium-length cartridge case, comparable to the contemporary .44 Russian round in size and power.

Loading was via a gate on the revolver's right side, and the cylinder was released by pulling the hammer to half-cock.

A unique feature among these revolvers was the safety lever, which was often applied with the hammer resting in the half-cock position.