U.S. flag

An official website of the United States government, Department of Justice.

NIJ Training Course for Firearm Examiners: Modern Firearms Manufacturing Demonstration of a Grinding Wheel Used To Strengthen Metal Surfaces

An interactive tool used to supplement the NIJ online training course entitled 'Firearm Examiner Training', as outlined in the fourth learning module, 'Modern Firearms Manufacture'. This video demonstrates the process of how a grinding wheel is used to strengthen a metal surface.

Date Published: June 23, 2020