Few shotguns have earned the reputation for reliability and versatility that the Mossberg 590 has built over more than four decades of service.
Whether racked in a patrol car, stowed in armories, on naval vessels, or kept in a bedroom closet for home defense, the 590 has become one of the most widely trusted pump-action shotguns in the world.
U.S. Marines with 2nd Battalion, 7th Marines, assigned to the Special Purpose Marine Air-Ground Task Force-Crisis Response-Central Command (SPMAGTF-CR-CC) 19.2, fire Mossberg 590A1 12-gauge shotguns at range at the Baghdad Embassy Compound in Iraq, May 8, 2020. The SPMAGTF-CR-CC is a crisis response force, prepared to deploy a variety of capabilities across the region. (U.S. Marine Corps Photo by Cpl. Brendan Custer)
Its development is a case of practical engineering meeting real-world demand, first for institutions that needed a dependable tool, and later for civilians who wanted the same qualities in their own hands.
Although the military had a slew of Mossbergs in its inventory, I never fired one while in the service. I owned one and shot it extensively after the 590 was introduced, and it is a very worthy home-defense shotgun.
Personal preference, but I’m not a fan of the pistol grip or of putting optics on a home-defense shotgun, which is unnecessary, in my opinion; but if it works… then go for it.
U.S. Marines with 2nd Battalion, 5th Marine Regiment, assigned to Special Purpose Marine-Air Ground Task Force – Crisis Response – Central Command 20.2, fires a Mossberg 590A1 12-gauge shotgun during a combat marksmanship range in Kuwait, June 26, 2020. The combat marksmanship program is designed to improve the Marines accuracy and lethality with their service weapons. The SPMAGTF-CR-CC is a crisis response force, prepared to deploy a variety of capabilities across the region. (U.S. Marine Corps photo by Sgt. Brendan Custer)
A U.S. Marine with 2nd Battalion, 7th Marines, assigned to the Special Purpose Marine Air-Ground Task Force-Crisis Response-Central Command (SPMAGTF-CR-CC) 19.2, cycles 12-gauge buckshot in a Mossberg 590A1 12-gauge shotgun at range at the Baghdad Embassy Compound in Iraq, May 8, 2020. The SPMAGTF-CR-CC is a crisis response force, prepared to deploy a variety of capabilities across the region. (U.S. Marine Corps Photo by Cpl. Brendan Custer)
Origins and Design
The Mossberg 590 traces its lineage to the Mossberg 500 series, introduced in the 1960s as an affordable, reliable pump-action shotgun for hunting and general use.
As law enforcement agencies and military branches took a closer look at combat shotguns in the 1980s, Mossberg developed the 590 as a ruggedized variant engineered to meet military specifications.
The result was a shotgun built around simplicity, durability, and ease of maintenance under harsh conditions.
Key design features set the 590 apart from its civilian-oriented siblings.
It uses a thicker-walled steel receiver and a heavier barrel than earlier Mossberg models, along with a dual extractor system that improves reliability when cycling shells.
The safety is mounted on top of the receiver, within easy reach of the thumb regardless of whether the shooter is right- or left-handed.
The action can be cycled without first pulling the trigger, a feature that allows quick, safe unloading.
The 590 features an aluminum trigger guard and safety assembly designed to withstand impacts, freezing temperatures, and prolonged exposure to sand, mud, and saltwater environments.
Military and Law Enforcement Adoption
The turning point for the 590’s institutional reputation came when it was selected to meet U.S. military specification MIL-S-3443G, a rigorous set of standards covering durability, function, and parts interchangeability.
The 590 and its variant, the 590A1, passed extensive torture testing that included firing thousands of rounds, exposure to extreme heat and cold, and submersion in mud and sand.
This testing regimen made it one of the few shotguns to earn a formal military contract designation, and it has since been issued to units across the U.S. Army, Navy, Marine Corps, and Air Force for roles ranging from breaching doors to guard duty and close-quarters engagements.
Law enforcement agencies were drawn to the same qualities that appealed to the military.
A pump-action shotgun offers a visceral, unmistakable action-cycling sound that some argue has a deterrent effect, alongside genuine tactical versatility: the ability to fire less-lethal beanbag rounds, buckshot, slugs, or breaching rounds simply by changing the ammunition loaded into the same weapon.
For agencies operating on limited budgets, the 590’s relatively low cost per unit compared to some competitors, combined with its simple and minimal training curve, made it an easy choice for patrol officers, riot control, and specialized tactical teams alike.
It Is Popular In The Civilian Market For The Same Reasons
The same attributes that impressed institutional buyers translate directly into appeal for civilian owners.
Home defense is the most commonly cited reason people purchase a 590: a pump-action shotgun loaded with buckshot is widely regarded as an effective close-range defensive tool, and the manual pump action appeals to those who want a simple, low-tech mechanism with few components that is easy to train less-experienced family members to use.
The distinctive sound of racking a pump shotgun has become a cultural touchstone, often cited by owners as an added psychological deterrent; while not necessarily a defense plan, it will discourage most burglars.
Mossberg produces a wide range of barrel lengths, stock configurations, and accessory rails; the same basic platform can be configured for tactical training courses, 3-gun competition, or just plinking at the range.
Its widespread military and police service also gives it a kind of built-in credibility: many civilian buyers want a firearm proven in demanding professional environments.
The 590 wasn’t designed as a hunting or clay-shooting shotgun; it is a combat weapon. For home defense, I kept it with a staggered slug, buckshot load.
I liked the safety’s location and how easy it was to maintain. I let it go to a friend so I could get a Remington 870, which is very similar in use but has an 18.5-inch barrel instead of the 590’s 20-inch barrel.
I’ve had plenty of experience with shotguns of all sizes and uses. Some of the newer ones are fantastic weapons in all areas of usage.
However, the Mossberg 590’s military pedigree, proven reliability, and adaptability across roles explain why it remains a fixture in armories, patrol cars, and home gun safes alike, a rare example of a firearm that has satisfied institutional buyers and everyday consumers with essentially the same design.
About the Author: Steve Balestrieri
Steve Balestrieri is a National Security Columnist. He served as a US Army Special Forces NCO and Warrant Officer. In addition to writing on defense, he covers the NFL for PatsFans.com and is a member of the Pro Football Writers of America (PFWA).
