The Firearms and Toolmarks Subcommittee focuses on standards and guidelines related to the examination of firearm and toolmark evidence. This includes the comparison of microscopic toolmarks on bullets, cartridge cases, and other ammunition components and may also include firearm function testing, serial number restoration, muzzle-to-object distance determination, tools, and toolmarks.
Todd Weller, Subcommittee Chair, Weller Forensics, LLC
Andy Smith, Subcommittee Vice Chair, San Francisco Police Department Crime Lab
Wendy Gibson, Executive Secretary, Virginia Department of Forensic Science
Cassey Allen, Texas Department of Public Safety (Austin, TX)
James Carroll, Los Angeles County Sheriff's Department - Scientific Services Bureau
Eric Collins, Contra Costa County (California) Office of the Sheriff, Forensic Services Division
William Demuth, II, Illinois State Police, Division of Forensic Services
Erica Lawton, Alabama Department of Forensic Sciences
Ryan Lilien, M.D./Ph.D., Cadre Research Labs
Christopher Monturo, Hamilton County Coroner's Office Crime Laboratory
Max Morris, Ph.D., Iowa State University
Douglas Murphy, Terrorist Explosive Device Analytical Center (TEDAC), U.S. Federal Bureau of Investigation
Michael Neel, U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives
Ronald Nichols, Nichols Forensic Science Consulting
Melissa Oberg, Indiana State Police
Nicholas Petraco, John Jay College of Criminal Justice
James Steven Scott, Terrorist Explosive Device Analytical Center (TEDAC) / Federal Bureau of Investigation (FBI)
Erich Smith, U.S. Federal Bureau of Investigation
Theodore Vorburger, Ph.D., U.S. National Institute of Standards and Technology
Xiaoyu Alan Zheng, U.S. National Institute of Standards and Technology
See the Research & Development Needs identified by the Firearms and Toolmarks subcommittee.
- Under Development (still being written/edited/revised within OSAC)
- Work Product Sent to SDO (OSAC wrote/edited/revised document and introduced to SDO for development)
- Standard for 3D Measurement Systems and Measurement Quality Control for Firearm and Toolmark Analysis
- Standard for Barrel and Overall Length Measurements for Firearms (in conjunction with Measurement Uncertainty Estimation Form )
- Standard for Implementation of 3D Technologies in Forensic Laboratories for Firearm and Toolmark Analysis
- Standard Scale of Source Conclusions and Criteria for Toolmark Examinations
- Standard Test Method for the Examination and Testing of Firearms
- Standard for Topography Comparison Software for Firearm and Toolmark Analysis
- SDO Published (the SDO published the document and is posted on the SDO's website)
- Entered OSAC Registry Approval Process (document is being evaluated for placement on the OSAC Registry)
The Forensic Science Standards Board (FSSB) has provided the opportunity for OSAC Subcommittees to identify baseline documents and reference materials that best reflect the current state of the practice within their respective disciplines.
These documents contain practical information regarding these disciplines that can help forensic scientists, judges, lawyers, researchers, other interested parties and the general public, to better understand the nature, scope, and foundations of the individual disciplines as they are currently practiced.
It is important to note that the identification of these documents in this venue does not represent an endorsement by OSAC or NIST. Only documents that are posted on the OSAC Registries constitute OSAC endorsement. All copyrights for these documents are reserved by their owners. Subcommittee position statements or responses to data collections by the subcommittee represent the consensus opinion of the subcommittee, not necessarily the position of the entire OSAC organization or NIST.
NIST OSAC Firearms and Toolmarks Overview & Update - The Association of Firearm and Toolmark Examiners - 49th Annual Training Seminar (June 2018)
In general, the development of standards and guidelines is transitioning from the Scientific Working Groups (SWGs) to the OSAC. Some SWGs will continue to operate to provide other resources within their discipline. The existing SWG documents will remain in effect until updated documents are disseminated by the OSAC or the SWG. SWGDAM will retain the responsibility for updating the FBI DNA Quality Assurance Standards.
– Forensic Science Standards Board: March 2015