Examining the effects of 3D printed projectiles on firearm identification
- 1Division of Forensic Services, Nassau County Office of the Medical Examiner, Nassau, New York, USA.
- 0Division of Forensic Services, Nassau County Office of the Medical Examiner, Nassau, New York, USA.
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View abstract on PubMed
Summary
This summary is machine-generated.3D printed projectiles are suitable for firearms and retain rifling marks for identification. Modifications like casting and reduced propellant enhance these marks, allowing for potential firearm linkage.
Area Of Science
- Forensic Science
- Materials Science
- Mechanical Engineering
Background
- Increasing consumer access to 3D printers enables private manufacturing of firearms and components.
- New ammunition background check laws may drive interest in home manufacturing of ammunition.
- 3D printed firearm components raise concerns regarding regulatory compliance and public safety.
Purpose Of The Study
- To investigate the characteristics and forensic potential of 3D printed projectiles.
- To determine if 3D printed projectiles can be identified to a specific firearm.
- To assess the terminal performance of 3D printed projectiles.
Main Methods
- 3D printed projectiles were test-fired in a firearm.
- Ballistics analysis was conducted to examine striations and markings.
- Projectile performance was evaluated against common obstacles and protective gear.
- Markings from the 3D printer build plate were analyzed.
Main Results
- 3D printed projectiles acquire class and individual rifling characteristics, enabling firearm identification.
- Projectile markings are difficult to visualize but can be enhanced through casting.
- Reduced propellant allows for better retention of markings.
- Projectiles demonstrated the ability to perforate common barriers and penetrate body armor.
- Build plate markings provide a link to the specific 3D printer.
Conclusions
- 3D printed projectiles share significant similarities with conventional bullets in terms of forensic potential.
- The study highlights the need for further research into the regulation and forensic analysis of 3D printed ammunition.
- Findings indicate that 3D printed projectiles pose a potential threat due to their terminal performance and identifiability.
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