Shotgun Review: Benelli's M2-G1

Aug 5
5 min read

Updated: 7 minutes ago

The Benelli M2 Tactical has been one of the most trusted semi-automatic shotguns in the defensive, duty, and competition world for two decades. Law enforcement agencies, home defense practitioners, and three-gun competitors have all adopted it for the same reasons: the Inertia Driven system is legendarily reliable, the gun runs clean, and the 18.5-inch barrel handles like it was purpose-built for close work. But it also shipped with a 5+1 capacity that left two rounds on the table compared to the competition, and a bolt release that felt like it was designed for bare hands on a calm afternoon rather than gloved fingers under stress. The M2-G1 fixes both of those problems and adds a few more refinements for good measure. If you have been waiting for the right version of the M2 Tactical, this is the one.

The Inertia Driven Foundation

Benelli's Inertia Driven system is the mechanical heart of the M2 platform, and it remains unchanged in the G1. The system operates through a simple principle: when the shotgun fires, the entire gun moves rearward under recoil while a spring-loaded inertia body in the bolt resists that movement. The resulting compression of the inertia spring drives the bolt rearward against residual pressure, extracting the spent shell and loading the next round from the magazine tube. The system uses fewer moving parts than a gas-operated action, which means less fouling in the receiver, less weight, and fewer components to maintain or replace over the life of the gun.

The practical advantage is reliability. The Inertia Driven system does not vent gas into the receiver the way gas-operated semi-automatics do, so the action stays cleaner over extended shooting sessions. There is no gas piston to scrub, no gas port to check, and no regulator to adjust. The trade-off is that the system requires a minimum recoil impulse to cycle, which means very light target loads can occasionally fail to operate the action. For the defensive and duty ammunition that the M2-G1 is designed around, this is a non-issue. Standard buckshot, slugs, and full-power field loads run the Inertia Driven system without hesitation.

The barrel is 18.5 inches of cryogenically treated steel. Benelli's cryogenic process subjects the barrel and choke tubes to extreme cold, which refines the molecular structure of the steel and produces measurably tighter, more consistent patterns. It is not a marketing gimmick. The improvement in pattern density is documented and repeatable, and it has been a standard feature across the Benelli tactical and competition lineup for years.

What the G1 Brings

The headline change is capacity. The M2-G1 extends the magazine tube to hold 7+1 rounds of 12-gauge ammunition, up from the standard M2 Tactical's 5+1. Two additional rounds may not sound dramatic on paper, but in a home defense scenario, a duty application, or a three-gun stage, those two rounds represent a meaningful reduction in reload frequency and a corresponding increase in sustained capability. For a shotgun platform that has always been praised for its speed and reliability, the additional capacity removes what was arguably its only competitive disadvantage against guns like the Beretta 1301 Tactical with an extended tube.

The second key upgrade is the oversized bolt release. The standard M2 Tactical's bolt release works, but it is small enough that fast manipulation with heavy gloves or cold hands can be frustrating. The G1's enlarged release is designed for positive engagement under stress, with enough surface area that a gloved thumb finds it without hunting. For shooters who run the M2 in cold-weather applications or who train in full kit, this is a practical improvement that matters every time you load or clear the gun.

Two Configurations

The M2-G1 ships in two distinct configurations that serve different needs.

The Gray model (SKU 11611) wears a gray synthetic stock in a traditional fixed configuration. This is the cleaner, simpler setup for shooters who want the extended capacity and oversized controls without changing the fundamental handling profile of the M2 Tactical. The fixed stock provides a consistent length of pull and cheek weld, which benefits shooters who have already established their mount and presentation with the M2 platform. If you know what you want and your stock dimensions are already dialed in, the Gray model keeps things straightforward.

The FDE model (SKU 11617) adds a 5-position telescoping stock in flat dark earth, which introduces adjustable length of pull and a more tactical profile. The telescoping stock allows the shooter to shorten the gun for use in body armor, heavy layered clothing, or confined spaces, and then extend it for a full-length mount during open shooting. For home defense, where the same gun may be shared between shooters of different builds, or for duty use where armor and load-bearing equipment change the effective stock length, the 5-position adjustment provides flexibility that a fixed stock cannot. The FDE finish completes the tactical aesthetic and pairs naturally with earth-tone accessories and furniture.

Both models are 922r compliant, meaning the necessary U.S.-made parts are installed to meet federal import compliance requirements. Both run the same 18.5-inch cryogenically treated barrel, the same Inertia Driven action, and the same 7+1 capacity.

On the Range and in the Home

The M2-G1 handles the way every M2 Tactical has always handled: fast, light, and responsive. At approximately 7 pounds, it is lighter than most gas-operated semi-automatics and noticeably quicker from target to target. The 18.5-inch barrel provides enough length for effective patterning with buckshot and accurate slug placement while remaining short enough to maneuver through doorways, hallways, and vehicles without snagging.

The Inertia Driven system's clean operation means the gun runs reliably through high-volume training sessions without the progressive fouling that gas guns accumulate. For the defensive shotgun owner who trains seriously and puts real volume through their gun, that reduced maintenance burden is not a minor consideration. It means the gun you train with stays in the same condition as the gun you rely on, without requiring a cleaning session between every range trip.

The ghost ring sight system, carried over from the standard M2 Tactical, remains one of the better iron sight setups available on a tactical shotgun. The M16-style front post with protective wings and the fully adjustable rear ghost ring provide a fast, intuitive sight picture that accommodates both buckshot and slug work out to meaningful distances.

Who This Is For

The M2-G1 is for the shooter who already knows the M2 Tactical is the right platform and has been waiting for the right configuration. It is for the home defense practitioner who wants the most reliable semi-automatic action in the business with enough capacity to handle a serious situation without running dry. It is for the three-gun competitor who needs an inertia gun with a 7+1 tube that does not require aftermarket extension parts and the compliance headaches that come with them. And it is for the law enforcement professional who needs a duty shotgun that runs in every condition, manipulates cleanly with gloved hands, and carries enough ammunition to complete the task.

The Gray model suits the shooter who values simplicity and a proven stock configuration. The FDE model suits the shooter who needs adjustability and a modern tactical profile. Both deliver the same mechanical core with the upgrades the platform has been missing.

Final Thoughts

Benelli took twenty years of feedback on the M2 Tactical and distilled it into two changes that matter more than anything else they could have done: more rounds in the tube and a bolt release you can actually find under pressure. The M2-G1 does not reinvent the platform. It completes it. The Inertia Driven system is still the cleanest, simplest, and most reliable semi-automatic action in the shotgun world. The 18.5-inch cryogenically treated barrel still patterns like it has something to prove. And now, with 7+1 capacity and controls built for the real world, the M2 has finally caught up with everything shooters have been asking for since the day it launched. It was worth the wait.