Benelli M4 Super 90: Combat Modernity

Moving the combat shotgun into the 21st century, the M4 Super 90 effectively combines the familiar with the innovative. (Photo Courtesy of U.S. Marine Corps)

Originally published in April, 2003

When I heard that Benelli was building the military’s U.S. M1014 Join Service Combat Shotgun, my first thought was, “Benelli? That would make it a semi-automatic, wouldn’t it?” As would most who have an interest in military firearms, I recognized this as significant. Since World War I, American servicemen have, in matters of large-scale procurement, used one form or another of the slide-action, or pump, shotgun. “The military must have gone with Benelli’s inertia recoil system,” was my second thought. Wrong. It was the first of myriad revelations the gun provided for me. Not only does it represent a new direction for the United States military, but also for Benelli itself.

Although the M1014 has a host of significant qualities, the most significant is the fact it is gas-operated rather than recoil-operated. Benelli built a reputation for reliability on its “Inertia Recoil System,” which uses the energy of the recoil impulse to operate the action. The question is, why did Benelli change from its original system?

Recently, American Rifleman received a pre-production Benelli M4 Super 90, the civilian version of the M1014, for testing and review. I called Craig Johnson, Benelli’s Customer Service Manager, and asked him why the shotgun did not use Benelli’s inertia system. He explained, “The military guys wanted to be able to attach night vision and other equipment to the shotgun.” Perplexed, I asked him why this necessitated a change in operating systems. He said that Benelli’s inertia system requires the gun to be kept within a particular weight range—those attachments add weight that could throw off the balance of the gun and, consequently, the functioning of the inertia system. The answer was to go to a gas-operated action.

Accepting that, it is noteworthy that Benelli recognized, when designed a firearm, a balance must be struck between innovation and proven design. The goal for Benelli was to retain the reliability of its shotguns and incorporate a new operating system—all while not reinventing the wheel.

Benelli’s answer, the ARGO system, became the heart of the new shotgun. ARGO, which stands for “Auto Regulated Gas Operated,” is directly related to the gas system found on the R1 rifle previously covered in these pages (February 2003, p.58). In the ARGO system on the M4 Super 90—designed to function with 2 ¾” or 3” shells—dual stainless self-cleaning pistons, located just ahead of the chamber, are impinged by hot gases through dual gas ports located just forward of the forcing cone. This system is, by nature, cleaner than most gas-operated semi-automatics as the gas tends to be hotter and cleaner at a point so early in the firing cycle.

Obviously, the ARGO system is quite a development for Benelli. But, as noted earlier, it is prudent to balance innovation with proven design. This is where the bolt mechanism comes into play. While the ARGO system is new, the bolt mechanism will look familiar to anyone who has dealt with an inertia-operated Benelli. It employs the familiar two-piece design made up of a bolt carrier and a rotating bolt head with two lugs that lock directly into a barrel extension. Gas from the ports impinge the gas system’s dual pistons, which then move toward the receiver and provide rearward thrust to the bolt carrier.

So, the question is, is this shotgun “worth its salt?” To answer that, it is best to go to the sharp end—those who actually use it. A call to the Marine Corps’ press affairs office put me in touch with both the 4th Marine Expeditionary Brigade (Anti-Terrorism)—4thMEB(AT)—based at Camp Lejeune, N.C., and with the Marines’ Quantico, Va., Special Reaction Team, which is the equivalent of a civilian SWAT team.

“Is the semi-automatic operation of the M1014/M4 Super 90 an advantage in your opinion?” M/Sgt. Luis H. Hernandez, the 4thMEB(AT)’s staff non-commissioned officer in charge of the unit’s training center, responded, “It is a plus, in my opinion. Fast follow-up rounds in close quarters are a definite advantage.” S/Sgt. Kurt D. Vermazan, also of the 4thMEB(AT) and chief instructor for its Shotgun Training Course, added, “The semi-automatic operation has another advantage. It removes the risk of ‘short-stroking’ the action, which can happen under stress.” S/Sgt. Eric Meek of Quantico’s Special Reaction Team had similar feelings. “In my opinion, the M1014 far surpasses [previous] shotguns. the semi-automatic operation eliminates any human error because the cycling of the weapon is done for you.”

When asked what they thought of the shotgun in general and how it has been received in the Marine Corps, S/Sgt. Meek said “Great gun, extremely fast action. I specifically like the way it handles—the recoil is very easy to control, making multiple target engagement easy.” Vermazan noted that younger Marines take quickly to the shotgun. “This is an advantage with the younger Marines who have no experience with a shotgun. They like the way it looks and don’t have pre-conceived notions about how a shotgun should work. It makes it easier to train them.”

Vermazan did point out, though, that the Benelli is naturally more complex than the earlier slide actions. “It does require more practice to become proficient, but more training is never a bad thing, and more trigger time is always a plus.”

Upon inspection of the M4 Super 90, I would have to say that I concur with the Marines’ positive impressions. Overall, it possesses many of the attributes of a conventional Benelli—familiar control locations, ergonomically designed pistol grip, similar bolt design and operation, etc. Where it stands apart is in the modifications stemming from its military-based design.

The M4 Super 90 is an impressive combination of polymer, aluminum, and steel with a matte-black finish to protect against corrosion. The aluminum receiver is anodized and the phosphated, 18 ½” steel barrel has a chrome-plated bore for durability. The sighting system is exemplary. Made by Italy’s LPA Sights, it is what is popularly known was a “ghost ring,” in which the rear sight is designed to fade out of view when the eye focuses on the front sight. The system incorporates white dots and optional tritium inserts. The sights are all-steel, click adjustable for windage and elevation and are heavily bult and reinforced.

Another nice feature of the M4 Super 90 design is its accommodation for “southpaws.” All sling attachment points are ambidextrous, and the over-sized safety at the rear of the trigger guard is reversible.


The most obvious indicators of the M4 Super 90’s military heritage are the stock design, Picatinny accessory mounting rail, ease of disassembly and the modular nature of the design. Modularity was a key design factor of the M1014. Consequently, the M4 Super 90 has the option of switching out the barrel or the type of stock easily and without tools.

Although the M1014 features a fully collapsing stock, the M4 Super 90’s stock is fixed in the extended position for compliance with current law. While the aluminum stock itself is the same as the military version with a generous rubber recoil pad and comfortable cheekpiece, it is the design of the recoil tube that differs. Whereas the M1014 has two machined sections on the tube for either fully open or fully closed positioning of the stock, the M4 Super 90 has only the allowance for fully extended.

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9 Responses to Benelli M4 Super 90: Combat Modernity

mike wrote:
November 09, 2012

I have an M1 and have a quesrltion regarding unloading. Is there supposed to be a button/prtorusion on the bar holding the shells in the tube making it easier to depress the rail and release them? I have found it nearly impossible to unload safely and mine does not have such a button. Any insight is appreciated. Mike

mike wrote:
November 07, 2012

I have an M1 and have a quesrltion regarding unloading. Is there supposed to be a button/prtorusion on the bar holding the shells in the tube making it easier to depress the rail and release them? I have found it nearly impossible to unload safely and mine does not have such a button. Any insight is appreciated. Mike

USWG01 wrote:
November 01, 2011

The magazine capacity is federally regulated on imported shotguns for sale to civilians. Don't blame Benelli. This is your tax money at work ;) I just purchased a civilian M4. With 2 3/4" shells it will hold 5+1, and like the others said, you can purchase an extension if you like. With the right extension and technique you can reliably carry 9 rounds. I sold my 870 to buy this shotgun.

Cody wrote:
October 25, 2011

M1014 is a Gas-Piston operated system. Basically, gases from a fired shell push the piston, the piston pushes the bolt carrier, the bolt rotates and unlocks, ejecting the spent shell, then reload a new on, locking the bolt, and cocking the hammer in less than half a second.... it is a very clean reliable action, Check out POF-USA or Barrett REC7, H&K P416... 'Thanks for playing'

BD wrote:
October 18, 2011

Really, Guest? How many intruders do yo expect in your home?

OK wrote:
October 16, 2011

Look up Nordic shotgun parts...they sell an extension.

Don wrote:
October 11, 2011

Its not Russian.Its built by Blackwater Firearms in North Carolina; USA!

Christian Dystopian wrote:
September 10, 2011

I think it high time the military adopted a gas operated semi auto shotgun. I really would have preferred the Russian AA-12 or equivalent. If you haven't seen videos of this ugly, ugly, weapon check out YouTube & you'll know what I mean. You may not agree but you'll understand my reasoning.

guest wrote:
August 25, 2011

why is the magazine tube limited to 4 rounds??? makes no sense. i would love to purchase one but the fact that it only holds 4+1 rounds turns me off. my remington 870 holds 6+1 and my mossberg 590 holds 8+1. i do not feel comfortable in purchasing a self defense weapon that is restricted to 4 rounds.