The proposed bill seeks to enhance firearm regulations in New Jersey by prohibiting the possession and sale of machine gun conversion devices, which are defined as devices that modify semiautomatic firearms to enable them to fire multiple shots with a single trigger pull. The bill introduces new criminal penalties, categorizing the possession or sale of such devices as a third-degree crime, punishable by three to five years of imprisonment and/or a fine of up to $15,000. Additionally, it modifies the existing definition of "machine gun" to include firearms equipped with a machine gun conversion device, thereby broadening the scope of what constitutes a machine gun under state law.

Moreover, the bill establishes stricter penalties for the possession of bump stocks, trigger cranks, and machine gun conversion devices, and criminalizes the manufacturing and distribution of firearms using three-dimensional printers. Individuals who purchase firearm parts without a serial number with the intent to manufacture a firearm are guilty of a second-degree crime. The legislation aims to improve public safety by ensuring that only licensed individuals can possess or manufacture firearms and ammunition, while also imposing consecutive penalties for violations related to machine gun conversion devices and assault firearms. The act is set to take effect six months after its enactment.