- 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
U.S. Department of Justice, Office of Justice ProgramsNational Institute of JusticeThe Research, Development, and Evaluation Agency of the U.S. Department of Justice
Anodizing
Home > Modern Firearms Manufacture > Cosmetic Finish > Anodizing
These inexpensive carabiners have an
anodized aluminum surface that has been dyed.
Anodizing is used to provide a protective coating for aluminum and titanium. The process produces a controlled oxidized surface similar to bluing. Like the electroplating process, anodizing uses electrical current. Different colors can be produced in this process; black is the most common for firearms parts.
Other finishes that the firearm examiner may encounter include Parkerizing (phosphating coatings applied to steel), case hardening, and various paints.
