The Walther Model 9 was a striker fired

semi-automatic pistol A semi-automatic pistol is a type of repeating single-chamber handgun ( pistol) that automatically cycles its action to insert the subsequent cartridge into the chamber (self-loading), but requires manual actuation of the trigger to actuall ...

produced by Carl Walther CmbH and chambered in

.25 ACP The .25 ACP ( Automatic Colt Pistol) (6.35×16mmSR) is a semi-rimmed, straight-walled centerfire pistol cartridge introduced by John Browning John Moses Browning (January 23, 1855 – November 26, 1926) was an American firearm designe ...

. The decision to use a striker vs. that of an internal hammer like on the Walther Model 8 was to reduce overall size of the gun, but sacrificed reliability. If the striker spring is compressed for extended periods of time it can weaken and not have enough force to ignite the primer causing a miss-fire. This can be avoided by not keeping the pistol cocked when not in use. It has a 6 round detachable box magazine. The Model 9 is similar in size and function to the

Baby Browning The 1931 Fabrique Nationale (FN) Baby Browning is a small blowback-operated semi-automatic pistol designed by Belgium-born Dieudonné Saive chambered in .25 ACP (6.35x15 mm). The pistol features a six-round magazine capacity and is a striker-fi ...

pistol which is only slightly larger. The Browning is also chambered in the .25 ACP cartridge. A Walther Model 9 carried by American Colonel Mickey Marcus is on display at the

West Point Museum The United States Military Academy (USMA), also known metonymically as West Point or simply as Army, is a United States service academy in West Point, New York. It was originally established as a fort, since it sits on strategic high groun ...

References

Walther semi-automatic pistols .25 ACP semi-automatic pistols {{Pistol-stub