A weapons offense involving prohibited possession, transfer, carrying, or use of a regulated weapon or related device. It is defined by prohibited status, location restrictions, registration requirements, or prohibited conduct elements where applicable. It does not include lawful possession or handling that satisfies all authorization and compliance requirements. It addresses public safety risk and often carries enhancements and collateral restrictions upon conviction. The concept is generally stable, though regulated-item lists and thresholds evolve over time.

Principle

Because automatic firing capability materially increases lethality and changes typical use, law classifies such weapons as highly regulated, imposing stricter ownership, transfer, and recordkeeping requirements to protect public safety and enable enforcement.

Demonstration

An individual converts a semi-automatic rifle to full-automatic operation using an auto-sear device and retains the weapon in their residence without registering it under the statute that governs machine guns; law enforcement charges possession of a machine gun.

Misapplication

Charging owners of firearms with cosmetic or non-fire-control parts (e.g., perceived selector markings) as possessing machine guns absent conversion to a functionally automatic firing mechanism, confusing appearance with operational capability.

Consequence

Properly applied, the offense prevents uncontrolled circulation of fully automatic weapons, supports investigative tracing, and reduces risk of mass-casualty incidents by restricting civilian access to highly lethal configurations.

Reversal

The inverse would be treating automatic capability as immaterial, allowing private possession and transfer of fully automatic weapons without special authorization, registration, or oversight.

Boundary

Covers weapons that meet statutory definitions of machine guns or fully automatic firearms; excludes semi-automatic firearms, non-fire-control accessories, replicas or toys, and lawful possession where specific statutory exemptions, licensing, or registrations apply (e.g., by government or licensed entities).

Semantic Tension

Tension exists between functional definitions (does the weapon fire automatically?) and formalistic readings based on classification terms or manufacturer labeling; legal disputes often hinge on the technical element of automatic fire capability and the presence of conversion devices.

Synthesis

Possession of a machine gun is the statutory prohibition on unauthorized control of firearms that discharge multiple rounds per trigger action, reflecting policy to tightly regulate highly lethal automatic capabilities through licensing, registration, and criminal sanctions.