|For an overview of 9mm rounds throughout the Fallout series, see 9mm.|
175 years old by the time the Great War happened, the 9×19mm Parabellum was one of the most popular and widespread ammunition types in the world. Although the U.S. military and federal agencies transitioned to the more powerful 10mm Auto cartridge, the venerable Parabellum remained popular throughout the United States of America. After the war, following a period of scarcity, it re-emerged as the primary pistol round of the New California Republic Army, used by the standard M&A 9mm pistols issued to its troops.
The rarest possible ammunition type in Fallout, offering inferior performance to any other ammo type.