The proposed bill in New Jersey aims to prohibit the possession and sale of machine gun conversion devices, establishing criminal penalties for violations. It introduces a new definition for "machine gun conversion device," which refers to any device that modifies a semiautomatic firearm to enable it to fire multiple shots with a single trigger pull. Additionally, the bill modifies the existing definition of "machine gun" to include firearms equipped with a trigger crank or a machine gun conversion device, thereby closing potential loopholes in current firearm regulations. The bill emphasizes the state's commitment to reducing gun violence and enhancing public safety through stricter firearm modifications regulations.

Moreover, the bill establishes that possessing or selling a machine gun conversion device is a third-degree crime, punishable by three to five years of imprisonment and/or a fine of up to $15,000. It also clarifies that firearms equipped with such devices are classified as machine guns, which carry more severe penalties under existing law. The legislation further criminalizes the manufacturing and distribution of machine gun conversion devices and outlines that penalties for these offenses will run consecutively with those for possessing an assault firearm or machine gun. This bill is a response to recommendations from the New Jersey State Commission of Investigation regarding illegal firearms use and is set to take effect six months after its enactment.