Do cops have automatic weapons? Some do, but most don’t. The standard-issue firearms for patrol officers across the United States are semi-automatic pistols, shotguns, and rifles, each of which fires one round per trigger pull. Fully automatic weapons exist within American law enforcement, but they sit almost entirely inside specialized tactical units like SWAT teams. Federal law gives police agencies a legal pathway to acquire machine guns that civilians cannot use, yet the everyday reality is that the overwhelming majority of officers never handle one on duty.
What Counts as an Automatic Weapon
A fully automatic firearm keeps firing as long as the trigger is held down and rounds remain in the magazine. Federal law calls these “machine guns.” A semi-automatic firearm fires one round per trigger pull and then chambers the next cartridge so it’s ready to fire again. The difference is mechanical, and it shows up in fire rate, ammunition use, and how controllable the weapon is under stress.
There is a middle category. Select-fire weapons have a selector switch that lets the shooter toggle between semi-automatic and fully automatic, sometimes with a burst mode that fires two or three rounds per trigger pull. The military’s M4A1 carbine is select-fire. Under federal law, any weapon that fires more than one round per trigger pull qualifies as a machine gun, so select-fire rifles sit in the same restricted legal category as belt-fed machine guns.
What Patrol Officers Actually Carry
The sidearm holstered on a patrol officer’s belt is a semi-automatic pistol. Common duty models include the Glock 17, Glock 19, SIG Sauer P320, and Smith & Wesson M&P series. Agencies pick these for reliability, magazine capacity, and speed of draw in close encounters.
Many departments also stock patrol cars with a shotgun, a rifle, or both. The Remington 870 pump-action shotgun is a longtime staple, useful for breaching doors and firing less-lethal rounds as well as for defense. Patrol rifles are typically AR-15-platform semi-automatic carbines chambered in .223 or 5.56mm NATO. Department policies commonly require these rifles to be semi-automatic only. Some agencies issue the rifles directly; others let officers carry personally owned rifles after a department armorer inspects them and the officer qualifies. Either way, patrol rifles are not automatic weapons.
Where Automatic Weapons Actually Show Up
Automatic weapons live mainly in specialized units. SWAT teams and similar tactical squads sometimes have access to select-fire rifles and submachine guns because they respond to hostage situations, barricaded suspects, and high-risk warrant service, all of which look nothing like a routine traffic stop.
Submachine guns get particular use in close quarters. The Heckler & Koch MP5 has been a fixture of SWAT work for decades, prized for its accuracy and low recoil. More modern alternatives include the H&K UMP and the B&T APC9. The FN P90, compact with a high-capacity magazine, appears in some protective and tactical assignments. These weapons fire pistol-caliber rounds, which produce less noise and less overpenetration risk indoors than rifle ammunition.
Even inside tactical units, automatic fire is not the default. Officers trained on select-fire weapons usually keep them in semi-automatic mode for most engagements. Fully automatic fire consumes ammunition quickly and gives up accuracy. The automatic setting exists as a narrow tactical option, not a routine setting.
Why Police Can Have Machine Guns and Civilians Generally Cannot
Two federal statutes explain the gap.
The National Firearms Act
The National Firearms Act of 1934 created a federal registry and tax system for machine guns, short-barreled rifles and shotguns, silencers, and destructive devices. The Gun Control Act of 1968 broadened the categories and the definition of machine gun. As of 2026, the federal transfer tax on machine guns and destructive devices is $200 per item; the tax on other NFA categories such as silencers and short-barreled rifles has dropped to $0.1Office of the Law Revision Counsel. 26 US Code 5811 – Transfer Tax
Government agencies get a carve-out from those costs. Any state, local government, or official police organization engaged in criminal investigations can transfer or manufacture NFA firearms without paying the transfer or making taxes.2GovInfo. 26 US Code 5853 – Transfer and Making Tax Exemption Available to Certain Governmental Entities The weapons still have to be registered in the National Firearms Registration and Transfer Record, but the financial barrier that applies to civilians is removed.3Office of the Law Revision Counsel. 26 US Code 5841 – Registration of Firearms
The 1986 Machine Gun Ban
The Firearm Owners’ Protection Act of 1986 made it illegal for any person to transfer or possess a machine gun. That froze the civilian supply. Only machine guns lawfully possessed before May 19, 1986 can remain in private hands, and those pre-ban guns now sell for tens of thousands of dollars. Federal, state, and local government agencies and their subdivisions are entirely exempt from the ban.4Office of the Law Revision Counsel. 18 US Code 922 – Unlawful Acts
So a police department can buy a newly manufactured machine gun directly from the maker. A civilian cannot. That single distinction is why law enforcement has access to automatic weapons the general public doesn’t: the legal pipeline for new machine guns runs exclusively through government channels.
Military Surplus Through the 1033 Program
Police agencies can also acquire surplus military gear, including small arms and ammunition, through the Department of Defense’s 1033 Program. Federal law authorizes the Secretary of Defense to transfer excess military personal property to federal, state, and local law enforcement for use in law enforcement activities, including counter-drug and counterterrorism work.5Office of the Law Revision Counsel. 10 US Code 2576a – Excess Personal Property Sale or Donation for Law Enforcement Activities
The Law Enforcement Support Office at DLA Disposition Services in Battle Creek, Michigan manages the program. As of early 2025, roughly 6,300 agencies across 49 states and four U.S. territories take part. The program has limits. Equipment considered inherently offensive is off the table, including crew-served weapons, large-caliber weapons of .50 caliber or greater, armed vehicles like tanks, armed drones, and explosives. Aircraft and vehicles must be demilitarized before transfer.6Defense Logistics Agency. LESO 1033 Program FAQs Small arms below the .50 caliber threshold, including select-fire rifles, can be transferred to qualifying agencies.
A Note on Off-Duty Carry
Officers asking a related question sometimes want to know what they can carry off the clock. The Law Enforcement Officers Safety Act of 2004 lets qualified active-duty and retired officers carry concealed firearms across state lines, overriding most state and local concealed-carry rules, subject to agency authorization, qualification standards, and other conditions.7Office of the Law Revision Counsel. 18 US Code 926B – Carrying of Concealed Firearms by Qualified Law Enforcement Officers LEOSA covers concealed carry of standard firearms only; it does not authorize an officer to carry an automatic weapon off duty. Those stay in the agency armory.
The short answer, then, is yes and no. A patrol officer working a neighborhood beat is carrying a semi-automatic pistol and, if the cruiser is equipped, a semi-automatic rifle or a pump shotgun. The automatic weapons the public associates with police work sit in the hands of a much smaller group of tactical officers, acquired through a legal channel Congress opened specifically for government agencies.