Please explain how mass produced guns result in unique markers qualifying as evidence of crimes in the court of law. It seems like it would not warrant the validity it is given in court with all the manufacturing quality control measures, etc. TY
In: Engineering
Identifying caliber and rifling rate is useful, without anything else.
Beyond that, mass production is designed to be exactly as inconsistent as possible while still working. This is a cost saving measure. This means that no two items are the same. On top of that, wear and tear from something as tiny as a sand grain can leave recognizable permanent marks in a gun.
Lastly, they use some wild shit in court. It is not as high of an evidentiary standard as you might like to think.
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