Semi-Automatic Pistol
Definition
A handgun designed to fire one shot per trigger operation and use an operating cycle to prepare the next cartridge. Functioning designs normally extract and eject cases, but actual condition and handling affect scene evidence. Action principle and ignition mechanism are separate classifications.
A revolver uses a rotating cylinder with multiple chambers; a semi-automatic pistol uses an operating cycle to load the next cartridge after a discharge. Conventional revolvers retain fired cases until unloading, while a functioning semi-automatic normally extracts and ejects them. Actual condition and handling can complicate either pattern.
Related terms
- Blowback Operation
- An operating arrangement without a mechanical breech lock, in which the design and inertia of moving components control opening during pressure evolution....
- Locked Breech
- A mechanically engaged breech arrangement that remains locked during the initial firing phase before the design’s opening sequence. Short-recoil systems are common...
- Recoil Shield
- The rear supporting surface behind a conventional revolver cylinder that can contact a cartridge case during firing. It may contribute marks useful...
- Revolver
- A firearm with multiple chambers in a rotating cylinder that aligns a chamber with the barrel. Conventional designs retain fired cases until...
- Striker-Fired Mechanism
- A firing arrangement using a spring-driven striker rather than a hammer transferring impact to a separate firing component. Cocking and safety systems...