Establishes criminal penalties for sale and possession of machine gun conversion devices.

This bill establishes criminal penalties for possessing, selling, or manufacturing machine gun conversion devices, which are defined as devices designed to modify semiautomatic firearms to fire multiple shots with a single trigger pull. It makes possessing such a device a third-degree crime punishable by up to five years in prison and a $15,000 fine, with penalties running consecutively to any charges for possessing a machine gun or assault firearm. The bill clarifies that firearms equipped with these conversion devices are considered machine guns under New Jersey law. The legislation directly affects individuals who possess or distribute these devices, with exceptions for law enforcement officers acting within their official duties.