1994 Assault Weapons Ban: What It Covered, Loopholes, and Why It Ended

The 1994 assault weapons ban was a federal law that prohibited the manufacture, transfer, and possession of certain semi-automatic firearms and magazines holding more than ten rounds from September 13, 1994, through September 13, 2004. Its formal name was the Public Safety and Recreational Firearms Use Protection Act, and it was enacted as one subtitle of the Violent Crime Control and Law Enforcement Act of 1994, signed by President Bill Clinton.¹ A ten-year sunset clause written into the statute ended the ban automatically when Congress did not vote to renew it, and no comparable federal restriction has been enacted since.

Firearms Banned by Name

The law defined “semiautomatic assault weapon” in two ways. The first was a straightforward list of specific firearms banned by manufacturer and model, along with their copies and duplicates:²

Norinco, Mitchell, and Poly Technologies Avtomat Kalashnikov (AK-pattern) rifles
Action Arms Israeli UZI and Galil
Beretta Ar70 (SC-70)
Colt AR-15
Fabrique National FN/FAL, FN/LAR, and FNC
SWD M-10, M-11, M-11/9, and M-12
Steyr AUG
INTRATEC TEC-9, TEC-DC9, and TEC-22
Revolving cylinder shotguns including the Street Sweeper and Striker 12

These models could no longer be manufactured or sold to civilians regardless of what physical features they carried. The “copies or duplicates” language was meant to keep manufacturers from simply rebranding the same gun, though enforcing that provision proved difficult in practice.

The Two-Feature Test

The second definition swept in semi-automatic firearms that were not on the named list but had the wrong combination of physical features. The test differed by type of gun.

Rifles

A semi-automatic rifle was prohibited if it could accept a detachable magazine and had two or more of the following: a folding or telescoping stock, a pistol grip protruding noticeably below the action, a bayonet mount, a flash suppressor or threaded barrel designed to accept one, or a grenade launcher.² The detachable magazine was a threshold requirement. A rifle with a fixed internal magazine did not trigger the test at all.

Pistols

A semi-automatic pistol was banned if it used a detachable magazine and had two or more of these features: a magazine attachment outside the pistol grip, a threaded barrel for attaching a barrel extender or flash suppressor, a barrel shroud allowing the shooter to grip the barrel area without burning their hand, or an unloaded weight exceeding 50 ounces.²

Shotguns

A semi-automatic shotgun was prohibited if it had two or more of these features: a folding or telescoping stock, a pistol grip, a fixed magazine capacity over five rounds, or the ability to accept a detachable magazine.² Unlike the rifle test, no single feature was a threshold; a detachable magazine was itself one of the counted features.

Critics called this the “cosmetic features” approach because every listed feature affected a firearm’s external appearance and handling rather than its rate of fire or ammunition. A rifle firing the same cartridge at the same speed as a banned model could remain legal if it had a traditional wooden stock and lacked enough listed features to trip the two-feature threshold.

Magazine Capacity Limits

The law also banned the manufacture, transfer, and possession of magazines and other feeding devices holding more than ten rounds. The definition covered magazines, belts, drums, and feed strips for rifles, pistols, and shotguns alike.² Importing such devices for the civilian market was also prohibited.

Manufacturers had to mark post-ban magazines with date codes so they could be distinguished from older, legal units. That created a split market. Pre-ban magazines holding more than ten rounds could still be bought, sold, and used, while newly produced magazines were capped at ten. The limited supply of legal high-capacity magazines pushed prices up sharply. Law enforcement agencies and other government entities were exempt from the magazine restrictions entirely.

What Stayed Legal

The ban applied going forward, not retroactively. Any firearm or magazine lawfully owned before the law took effect on September 13, 1994, remained legal to possess and transfer.² Owners did not have to register these “pre-ban” items with the federal government. A Colt AR-15 manufactured in 1993 was perfectly legal to keep and sell. An identical rifle made in 1995 was a federal crime. The date on the receiver became the dividing line.

The statute included Appendix A, an explicit list of semi-automatic rifles and shotguns Congress considered primarily suited to hunting and target shooting. Those firearms were exempted by name. Importantly, the statute also specified that a firearm’s absence from Appendix A did not create any presumption that it was banned; the two-feature test still had to be applied.²

Broader categorical exemptions protected manually operated firearms (bolt-action, pump, lever, and slide-action), permanently disabled firearms, antiques, semi-automatic rifles that could not accept a detachable magazine holding more than five rounds, and semi-automatic shotguns that could not hold more than five rounds in any magazine.

How Manufacturers Kept Selling Similar Guns

The two-feature test was easy to work around. Because a rifle needed a detachable magazine plus two prohibited features to qualify as an assault weapon, manufacturers could keep making functionally identical guns by removing one or two cosmetic features. The industry called this “sporterization.” A post-ban Colt AR-15 Match Target, for instance, dropped the flash suppressor and bayonet lug from the pre-ban Colt AR-15 Sporter, leaving barrel length, caliber, rate of fire, and magazine compatibility unchanged. Importers of AK-pattern rifles did the same thing, producing models like the VEPR II that stripped enough external features to clear the legal threshold.

These post-ban compliant rifles were sold legally throughout the decade the law was in effect. Gun control advocates argued this gutted the law, since the features that made a weapon dangerous, meaning semi-automatic operation and the ability to accept detachable magazines, were the ones manufacturers were allowed to keep. Defenders of the law countered that even cosmetic restrictions slowed criminal modifications and that the magazine cap mattered more than the weapons ban itself.

What the Ban Actually Accomplished

A study funded by the Department of Justice and conducted by Jeffrey Roth and Christopher Koper found mixed results. Criminal use of the specifically banned firearms declined after the law took effect, suggesting the legal pre-ban stock was largely sitting with collectors and dealers rather than circulating on the street.³ Gun murder rates in 1995 ran roughly 9 to 11 percent below projected levels, and murders of police officers by offenders armed with assault weapons dropped sharply in the short term.

The ban did not reduce the average number of victims per shooting incident or the frequency of multiple-gunshot wounds. The researchers attributed this to the continued availability of grandfathered assault weapons, close-substitute firearms that passed the two-feature test, and the large existing supply of pre-ban high-capacity magazines. They also noted the banned weapons had been used in a relatively small share of gun crimes even before 1994.³ The study called the ban’s short-term impact on gun violence “uncertain,” partly because ten years was not enough time for the grandfathered supply to dry up.

Why the Ban Ended

The ten-year sunset clause was built into the law from the beginning as the price of passage. Without it, the bill likely would not have cleared either chamber. The provision meant that unless both houses of Congress voted to reauthorize the ban and a president signed the renewal, every restriction in the subtitle would vanish automatically.

That is what happened. On September 13, 2004, the federal assault weapons ban expired. Renewal bills were introduced in the years leading up to the expiration and in the years after, but none reached a floor vote with enough support to pass. Once the law lapsed, manufacturers immediately resumed production of firearms with previously banned features, and magazines holding more than ten rounds returned to the civilian market nationwide under federal law.¹

State Bans and Federal Renewal Efforts

The expiration did not leave the entire country without restrictions. Roughly ten states maintain their own assault weapons bans, including California, Connecticut, Delaware, Illinois, Maryland, Massachusetts, New Jersey, New York, Rhode Island, and Washington. These laws vary in how they define prohibited firearms. Some use a one-feature test rather than the federal law’s two-feature approach, and several ban weapons by name using lists far longer than the original federal statute’s nine categories. Whether those state bans survive ongoing Second Amendment challenges remains an active question in the courts.

At the federal level, lawmakers have introduced new versions of the assault weapons ban in nearly every Congress since 2004. The most recent is the Assault Weapons Ban of 2025, introduced in the House as H.R. 3115 during the 119th Congress with a companion bill in the Senate.⁴ Like its predecessors, the bill would ban the sale, manufacture, transfer, and importation of military-style semi-automatic weapons and high-capacity magazines. None of the renewal attempts since 2004 have come close to passing both chambers.

1
Congress.gov. H.R.3355 – Violent Crime Control and Law Enforcement Act of 1994
2
Congress.gov. H.R. 4296 – Public Safety and Recreational Firearms Use Protection Act
3
Office of Justice Programs. Impacts of the 1994 Assault Weapons Ban
4
Congress.gov. Assault Weapons Ban of 2025