The gun has a small aftermarket that’s wholly dedicated to the gun. The Benelli M4 actually came about as the result of an open request via the United States Army looking for a new 12 gauge shotgun back in 1998. The M4 is Benelli’s gas-powered gun that uses the ARGO system. The inertia system works in a way that’s simple but complicated to explain. The Benelli M4 is a 12 gauge, gas-operated, semi-automatic shotgun designed for tactical applications. The M4 is another semi-automatic shotgun from Benelli. The Benelli M4 is a bit of a niche weapon, especially with its price. The ARGO system increases the reliability of a shotgun by taking gasses from the further up the barrel than normal. I’m biased for sure, but the Benelli M4 is a great looking shotgun. You can find a few different upgrades and parts to make it yours. Its a half-decent Ben Affleck flick, too. Benelli M4.

Newton’s Laws. 5) Benelli M4 Tactical Shotgun. Instead of the Inertia Driven system found in the M2, the M4 has a gas operated system.

The M4's gas system is not … Not only was the Benelli M4 created for, but it actually smoked the competition and was awarded the contract. It seeks, tactical in the best way and most certainly intimidating.

The gas system the M4 uses is called the ARGO (Auto Regulating Gas Operated) system.

Looks: 5/5 . Benelli didn’t invent the inertia system, a man named Carl Axel Theodor Sjogren did in 1900. It was designed for and adopted by the U.S. Marine Corps. There are pros and cons to both systems when it comes to semi-auto shotguns.