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Xavier Becerra ~ Attorney General

Firearms and Toolmarks Introduction I

Firearms and Toolmarks Introduction I

Class Code
Subject Area
E-Firearms and Impression Evidence
Class Description 


This one-week (38-hour) course is designed for the new firearms examiner. The course will take the criminalists through a typical firearms case up to the point that actual striated comparisons would start. Special emphasis will be placed on examination of recovered firearm components for information to a list of possible firearms, determine the brand of ammunition used, and intercomparison to other 'open' shooting cases. Topics covered in this course include the history, manufacture and nomenclature of firearms, introduction to ballistics, origin of markings on projectiles and casings, concepts of uniqueness, test-firing practices, crime scene considerations and introduction to the comparison of striated and impressed marks. Each class is limited to 12 students.


Instructor BFS Instructors
Teaching Methods
Classroom lectures, video recordings and practical workshops, and laboratory exercises
Students will be required to examine firearms and ammunition components, measure class characteristics, prepare lists of 'possible weapons', determine cartridge designation and weapon chambering, select appropriate test-firing ammunition, and write reports of examination.
Firearms Safety E101 is recommended
Pre-Course Reading Materials May Be Assigned
Materials Fee
Tuition No cost to POST supported or State of California based Law Enforcement agencies. A $600.00 tuition fee will be required of all other public agency, private sector, or out-of-state applicants.
Course Contact
Mike Giusto (916) 695-1800, (916) 695-1805

Location Start Date

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If no classes are scheduled, you’ll be placed on a list that expresses your desire to attend this course.