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Firearms and toolmarks

What is Firearms and Toolmarks Analysis?

Firearms and toolmarks analysis examines the microscopic marks left behind by tools (such as firearms, screwdrivers, pry bars and bolt cutters). The goal is to determine whether a specific firearm or tool was used in a crime.

What is NIST’s Role?

Our experts:

  • Create standards and reference materials to help forensic laboratories test their analytical methods.
  • Maintain databases of toolmarks to support the development and evaluation of new analytical methods.
  • Develop statistical models and algorithms to give analytical results a solid mathematical foundation.

News and Updates

Texas Forensic Science Commission Supports NIST Recommendations

Two New Forensic Firearm Examination Standards Added to the OSAC Registry of Approved Standards

NIST Launches an Updated Organization of Scientific Area Committees for Forensic Science

Blog Posts

Building a Firearms Toolmark Database

Got Evidence? How to Improve Forensic Science

Feature stories and explainers

Preserving the Kennedy Assassination Bullets in Digital Form

View firearms and toolmarks publications View firearms and toolmarks research projects

Featured Videos

Preserving the JFK Assassination Bullets

Preserving the JFK Assassination Bullets

Forensic Marks on a Cartridge Case

Forensic Marks on a Cartridge Case

Matching Crime-Scene Bullets Segment by Segment

Matching Crime-Scene Bullets Segment by Segment

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