Learning and understanding the mechanics of a firearm

Learning and understanding the mechanics of a firearm is important because it allows you to visualize and understand how a bullet (projectile) and cartridge case receive identifiable toolmark impressions when being fired from a firearm. Being able to identify toolmark impressions, compare and identify them to the firearm that they were fired from is a specialty, but it is essential that you have the understanding as to why this type of evidence can be crucial to an investigation.

In this discussion, I would like for you to combine what you have learned from your reading assignment and the attached video. After watching the video, I would like for you to describe in your own words, how your new understanding of firearm mechanics correlates with your new understanding of firearm evidence examination and toolmark impressions.

Discussion Question Response:

Part 1: Please answer the following question: Describe a scenario that this type of evidence can help an investigation. What can be determined with a firearm toolmark identification? What cannot be determined?

answer doesn’t have to be too long