M4 is the first Benelli semi-automatic with an ingenious, innovative self adjusting gas system patented by Benelli. It is equipped with a fixed blade front sight protected by side wings and an adjustable diopter. The barrel is chromed inside and phosphated outside. M4 stands out as one of the best shotguns available on the market today in terms of performance, choice of materials and reliability, all guaranteed benefits of Benelli products.

Technical sheet

GAUGE

12

CHAMBER

76 mm Magnum

BARRELS AND CHOKES

SB - Interchangeable choke 47 cm

RECEIVER FINISHING

Ergal, mat black anodised, anti-glare

STOCK AND FORE-END

Technopolymer

STOCK LENGTH TRIGGER MEASURED / DEVIATION

360 mm Without cast

MAGAZINES

7 rounds 12/70 mm, 6 rounds 12/76 mm; 2-round limiter available for the Italian market

WEIGHT

approx. 3,800 g with 47 cm barrel

PACKAGING

Drop change kit, user and spare parts handbook, Ben oil.

A.R.G.O. ®

Simple, robust, original, clever: these are the peculiarities of the project underlying the A.R.G.O. patent: : A.R.G.O. stands for Auto Regulating Gas Operated. Made of a self adjusting gas system containing a short-stroke piston, A.R.G.O. is placed under the barrel, near the chamber, so as to exploit the hottest gases at a higher pressure. The gases tapped from the barrel expand (in the self adjusting gas system) and rapidly accelerate the stroke of the piston, which simultaneously hits the bolt follower pin and pushes it hard to enough to make it retract. It is self-regulating because the gas inlet valve functions as a regulating valve that expels excess gas during firing. The greater the volume of gas flowing from the barrel, the faster the pin valve opens and allows it to exit, thus decreasing the pressure inside. Self-adjusting, A.R.G.O. guarantees shooting precision, reliability, durability and confirms the technological excellence of Benelli. An operating mechanism that is also appreciated and approved by the Marines.