What Are the Magazine Capacity Limits in New Jersey?
Woody's answers are based on published federal and state law. Not legal advice. Consult a licensed attorney for your specific situation.
New Jersey limits magazine capacity to 10 rounds for most firearms. This applies to both possession and manufacture of magazines within the state.
What This Means for You
New Jersey's 10-round magazine limit is among the more restrictive in the nation and affects virtually every firearms build decision you'll make. The law covers both detachable magazines and fixed feeding devices, meaning you need to consider capacity restrictions from the very beginning of any project. This isn't just about what you can buy, it's about what you can legally possess in the state.
The Detail
New Jersey established a 10-round capacity limit that applies to most magazine-fed firearms, including rifles, pistols, and shotguns. The restriction covers both detachable box magazines and tubular magazines, though there are some specific considerations for different firearm types. Law enforcement and military personnel may have different rules, but for civilian ownership, the 10-round limit is consistently enforced.
The law doesn't just regulate new purchases, it also affects magazines you might already own. When New Jersey reduced their limit from 15 rounds to 10 rounds in recent years, existing higher-capacity magazines became prohibited for civilian possession. This means you can't legally possess standard-capacity magazines that were legal in other states or under federal law during the 1994-2004 federal assault weapons ban period.
There are some technical aspects worth understanding about how capacity is measured. Generally, the limit refers to the maximum number of cartridges the magazine can hold, not necessarily how many you load into it. Some magazines designed for more than 10 rounds cannot be legally modified or blocked to comply with New Jersey law, while others might be legally compliant if properly modified by qualified parties.
Certain firearms may have specific exemptions or different applications of the law, particularly older designs or specialized sporting firearms. However, these exceptions are narrow and you should verify any claimed exemption through official state resources or qualified legal counsel. The state takes magazine capacity violations seriously, and ignorance of the specific requirements isn't considered a valid defense.
Build Impact
Every build in New Jersey needs to start with 10-round magazine compatibility as a core requirement. This affects your choice of platform, magazine well dimensions, and feeding system design, essentially making standard-capacity magazines from other states unusable for your projects.