PPD-40

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The PPD-40 (Pistolet-Pulemyot Degtyaryova, meaning Degtyaryov's machine pistol) was a Soviet submachine gun. Here's some information regarding it:

• Development and Design: Originally designed in 1934, the PPD-40 was chambered in 7.62x25mm Tokarev cartridge. It operated with an open-bolt mechanism and featured a fire selector. The design evolved from a locked-breech system (similar to Degtyarev's DP light machine gun) to a simpler blowback system.
• Production and Adoption: It was the first submachine gun adopted on a large scale by the Soviet Union. After trials in 1931/2, it entered production in 1934. Initial models used a 25-round curved stick magazine. In 1938, a drum magazine, inspired by the Finnish Suomi m31, was introduced. The final iteration, the PPD-40, primarily accepted 71-round drum magazines.
• Service and Replacement: The PPD-40 was in service on the eve of World War 2. Significant production occurred in 1940 (over 81,000 units), and continued into early 1941. However, it was soon replaced by the PPSh-41, which was easier and faster to manufacture.
• Features:
• Weight: The PPD-40 was relatively heavy, at about 12 pounds (5.45 kg) unloaded.
• Rate of Fire: It had a high rate of fire, around 900 rounds per minute.
• Magazines: It could use both stick and drum magazines, although PPD-40 mainly accepted 71-round drum magazines.

In Spanish, PPD stands for *Pistolet-Pulemyot Degtyaryova*, which translates to Degtyaryov's machine pistol.

Presidential Policy Directive 40 (PPD-40), titled National Continuity Policy, was issued in the United States. It directs the Secretary of Homeland Security, through FEMA, to coordinate continuity activities among executive departments and agencies.