: The Integrated Ballistic Identification System (IBIS) is the hardware and software used to capture these high-resolution 3D images.
Barrel uniqueness in firearms: reliable forensic match? - Facebook
: Microscopic flaws in the manufacturing process or wear and tear from use create a "signature" unique to that specific barrel. 2. Impression Marks (on the casing)
: The hooks and pins that pull the spent casing out and toss it away leave distinct scratches on the rim. The Technology of Tracking