Hamilton man pleads guilty to possessing a machine gun-conversion device

Potter Stewart United States Courthouse, Cincinnati.

Potter Stewart United States Courthouse, Cincinnati.

A previously convicted felon from Hamilton pleaded guilty in federal court to illegally possessing firearms, including a fully automatic weapon.

Justin Ervin, 35, of Hamilton, was charged with possessing a machine gun-conversion device, known as a switch, which converts a semi-automatic weapon into a fully automatic weapon.

Ervin was indicted by a federal grand jury and arrested in June, and his plea agreement includes a recommended sentence of 5 years in prison.

In May 2024, Hamilton police officers executed a search warrant at a residence where Ervin had been living, according to court documents. Officers were initially called to the house in response to a strangulation incident, which Ervin pleaded guilty in state court.

However, officers discovered seven firearms, a conversion device and more than 2,000 rounds of ammunition inside the residence. Because he is a previously convicted felon, he is prohibited from possessing firearms and ammunition. Ervin was convicted in Butler County Common Pleas Court for arson, a fourth-degree felony, in 2009, and robbery, a second-degree felony, in 2013.

Justin Ervin, 35, of Hamilton, admitted to possessing a machinegun-conversion device, known as a switch. The device converts a semi-automatic weapon into a fully automatic weapon. PROVIDED

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