The disturbing rise of 3D printed gun switches: A professional perspective
The digital age has democratized manufacturing and led to incredible innovation. Yet alongside legitimate advances, troubling applications have emerged. One of these developments was the dramatic increase in proliferation 3D printed gun switchspecifically a device designed to convert a semi-automatic firearm (such as a Glock pistol) into a fully automatic weapon ("Glock switch"). Driven by easy-to-use 3D printing technology and design files available online, this trend brings complex legal, safety and ethical challenges. As a specialist rapid prototyping manufacturer using cutting-edge Selective Laser Melting (SLM) technology, we felt compelled to provide an informed perspective on this issue.
Understand the technology behind the threat: What is a printed gun switch?
Firearm switch (automatic sear or "Glock switch") is a small mechanical component. Its sole function is to modify the firing mechanism of a semi-automatic pistol to allow for continuous, fully automatic fire until ammunition is exhausted. This is accomplished by manipulating slide movement and trigger reset.
Historically, illegal manufacturers have attempted to 3D print these devices out of polymer (plastic). However, these plastic variants have serious weaknesses:
- Poor durability: The enormous stresses generated during automatic firing often cause polymer switches to shatter or fail catastrophically within seconds.
- Unreliable performance: Inconsistent print quality and material properties can lead to unreliable functionality.
Metal Transformation: Amplifying the Problem with Advanced Additive Manufacturing
Dangerous escalation
