Tags: Weapon.
The Walther Model 9 was a striker fired semi-automatic pistol produced by Walther arms and chambered in .25 ACP. 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 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.
