A barrel is a barrel, and I think it highly unlikely that a mass-produced product leaving a unique fingerprint on something that’s been smushed into a completely different shape can be used as forensic evidence. Unless you know of it being scientifically proven, it is the domain of TV CSI.
So ghost guns not have distinctive rifling?
https://www.scientificamerican.com/article/the-field-of-firearms-forensics-is-flawed/
Bullet and rifling forensics is not based on science
A barrel is a barrel, and I think it highly unlikely that a mass-produced product leaving a unique fingerprint on something that’s been smushed into a completely different shape can be used as forensic evidence. Unless you know of it being scientifically proven, it is the domain of TV CSI.