What gun do most police officers carry?
By far the most popular police service pistol in the United States, the GLOCK 22 fires the potent 40 S&W cartridge and holds more rounds for its size and weight than most other full-sized handgun in its class.
The agency allows, but does not require, off-duty officers to carry their agency-issued firearm so they may be prepared to act as police officers when circumstances are appropriate.
After a major shift initiated by the FBI just a few years ago, the 9mm reigns supreme as the standard duty caliber in issue handguns across the U.S., despite the fact that, almost 30 years ago, the same FBI pushed the development of the . 40 Smith & Wesson cartridge as the ultimate law enforcement round.
While the vast majority of officers carry 9mm and . 40 caliber handguns, in recent years a number of enforcement agencies have made the switch to . 45s.
FBI SWAT is known to use the M4 carbine, Heckler & Koch MP5/10, Remington 870, Remington 700, various Glock models (17 Gen4, 19M, 20), SIG Sauer P226, and Springfield Armory 1911 Professional Custom.
A glass-bedded, scoped, bolt-action rifle with a heavy free-floating barrel is the most popular weapon used by teams. The 40XB, the Remington 700BDL, and the Ruger 77V are among popular makes. Members not required to carry a specific weapon because of their position often favor semior fully automatic weapons.
Federal Bureau of Investigation (FBI) scored higher in 3 areas: CEO Approval, Recommend to a friend and Positive Business Outlook. DEA scored higher in 5 areas: Overall Rating, Diversity & Inclusion, Senior Management, Compensation & Benefits and Career Opportunities.
Are Air Marshals Armed? Yes, an air marshal is authorized to carry a gun and make arrests on a flight. An air marshal will either carry a SIG Sauer P229 or SIG Sauer P239.
Members of ATF special agent ranks are issued the Glock 19M as their primary duty weapon and are trained in the use of, and issued, certain rifles and shotguns. The ATF Special Response Team (SRT) is armed with Colt M4 carbines and other firearms.
The Glock's large capacity and light body gave it advantages over other guns. "Police departments were amazed when they took their officers out to the range and found out not only could they learn to use the Glock pretty quickly, but the Glock also made them more accurate as marksmen," he says.
Does FBI use 9mm or 40?
The FBI has made a pragmatic decision that the 147 grain 9mm bullet is the best bullet for its agents because it allows for more rounds in the handgun. It has less recoil, is less expensive and its penetration apparently compares favorably with the larger-sized rounds.
Patrol Rifle - AR-15 Colt or Bushmaster – the AR15 is the most commonly observed rifle in police patrol. The weapon system is safe, accurate, reliable, effective, and easily deployed by officers of all stature due to its lightweight, low recoil, and general ease of operation. IV.

45 Auto projectiles tested by the FBI. 9mm Luger offers greater magazine capacity and less recoil/more weapon control at a lower cost. A majority of FBI shooters are both faster and more accurate using 9mm Luger versus . 40 S&W rounds.
In the law enforcement world, especially for patrol, the most common calibers for patrol rifles are . 223/5.56mm and .
- Editor's Pick. Glock 19 Gen 5. ...
- Runner Up. Smith & Wesson M&P M2.0. ...
- US Army Approved. Sig Sauer P320. ...
- Best Trigger. Walther PDP. ...
- Best Revolver. Smith & Wesson Model 686+ ...
- Easiest to Rack & Load. Smith & Wesson M&P Shield EZ 9mm. ...
- Like a Glock, But Not. Heckler & Koch VP9.
LAPD SWAT Officers qualify monthly with all assigned firearms. Each SWAT operator is issued a HK416 rifle, Benelli M4 Semiautomatic Shotgun, HK MP5, and a 1911 45 cal pistol.
As we can see from the chart above, 9mm bullets have a higher muzzle velocity than 45 ACP bullets do. Combined with the 9mm's smaller size than . 45 ACP, that translates into deeper bullet penetration. A higher muzzle velocity and lower weight also means that the 9mm usually has less vertical drop than a 45 does.
High tech bullets in premium ammunition are what most cops use today, and most hunters are going in the same direction. Top: Remington brass jacket Golden Saber, and Winchester's SXT. Below: Federal's proven . 45 Hydra-Shok and Speer's popular, effective Gold Dot bullet with bonded jacket and core.