A simple method to compare firing pin marks using stereomicroscope and Microsoft office (Windows 8) tools

Area of Science:

• Forensic Science
• Ballistics
• Firearm Examination

Background:

• Firearm identification relies on unique marks left on cartridge cases.
• Standard comparison microscopy is effective but not always field-deployable.

Purpose of the Study:

• To evaluate a simplified, cost-effective method for firearm identification.
• To compare striation marks on fired cartridge cases using accessible technology.

Main Methods:

• Analysis of firing pin, breech face, extractor, and ejector marks.
• Utilized a stereomicroscope and digital camera for mark capture.
• Employed computer software (Microsoft Word) for comparative analysis of striation marks.

Main Results:

• Striation mark similarities were highly convincing for firearm identification.
• Demonstrated the effectiveness of digital image analysis for comparison.
• Confirmed the non-use of a comparison microscope in this approach.

Conclusions:

• The described method offers a simple, cost-effective alternative for firearm identification.
• This technique is transportable for field studies and immediate on-site examination.
• Findings support forensic communities, law enforcement, and students in firearm analysis.