- 01: Introduction
- 02: History
- 03: Propellants, Firearms, and Ammunition Development
- 04: Modern Firearms Manufacture
- 05: Small Arms Ammunition
- 06: Evidence Handling Procedures
- 07: Equipment and Instrumentation
- 08: Examination of Firearms
- 09: Cartridge and Shotshell Examination
- 10: Characterization and Evaluation of Fired Projectiles
- 11: Bullet Comparison and Identification
- 12: Gunshot Residue and Distance Determination
- 13: Toolmark Identification
- 14: Communicating Results
- Resources
Gas-Operated Action
Home > Examination of Firearms > Handguns > Autoloading - Semiautomatic Pistols > Gas-Operated Action
Desert Eagle pistol
The gas-operated system is a locked breech system in which gas is bled from the barrel to move a piston rearward, unlocking the breech and cycling the firearm. The gas port is located near the muzzle and peak pressure is reduced before the gas is bled off. High-pressure cartridges are generally used in gas-operated action pistols. An external hammer is typically present.
