High Standard HDM

The High Standard HDM is an American semi-automatic pistol equipped with an integral silencer. Based on the High Standard H-D pistol, it was adopted by the Office of Strategic Services (OSS) during World War II. Because of legal concerns during wartime, full-metal-jacketed .22 LR rounds were developed for this pistol. William J. Donovan demonstrated the pistol to President Franklin D. Roosevelt inside the Oval Office. Gary Power's HDM is displayed in Moscow after his capture and release at the Central Armed Forces Museum as of 2017. The High Standard HDM is a conventional blowback-operated semi-automatic pistol fitted with an integral silencer which decreases its report by more than 20 dB. This pistol design was originally delivered on January 20, 1944, and original contract models were blued with a parkerized (phosphate) finish on the silencer. Follow on models were completely Parkerized. Post World War II models produced for the CIA were also blued. The weapon has a frame-mounted safety lever on the left in a similar position to the M1911A1 and Browning Hi-Power. The front sight is a fixed blade with a square notch fixed rear sight. This weapon uses a heel-mounted magazine release. The weapon is effective at short ranges when the low energy of the round fired is taken into account. The design is simple and typical of the period in which it was designed. A clone of the HDM is made by Arms Tech Limited. Still used by the Central Intelligence Agency, the United States Marine Corps, and the United States Army Special Forces. The weapon was also assigned to Lockheed U-2 pilots. Known to be used by the SOE in Nazi-occupied Europe. Formerly used by OSS agents.