Best Benelli M2 Accessories & Upgrades for 2026

“Benelli M2” now covers more than one furniture pattern, and Benelli also uses the M2 name on a separate gas model. Start with the action, factory forend, barrel marking, receiver holes, and barrel length. Those five checks decide which parts below belong on your gun.

The name M2-G1 means a new gas-operated model. It does not mean “generation one” of the inertia M2. The SuperNova is different again: it is a pump shotgun with its own furniture, magazine nut, and heavy-wall clamp path.

Start with the magazine tube and host nut. Then set the optic path, light and sling layout, generation-matched furniture, and choke. That order keeps each mounting decision from blocking the next one.

1. Build the magazine system.On the 18.5-inch Tactical, pair the +3B tube with the required M2 nut. The standard clamp supports this setup; a longer Field barrel needs a different tube-length decision.
2. Choose the aiming path.A drilled-and-tapped Tactical can use a C&H receiver mount. A vent-rib Field gun needs a rib-specific path instead.
3. Add light and sling hardware.Decide whether the forward area holds the Nordic clamp or the GG&G combination mount before adding a light.
4. Change furniture last.Stocks and forends have the sharpest generation split. Match the exact part number to the factory furniture in hand.
5. Pattern the barrel.A choke only belongs on a barrel marked for that removable system, and every load still needs a pattern check.

The Nordic tube and M2 host nut form the required extension path; the BCL-12 clamp is the support choice for this +3B Tactical setup. The 507COMP also needs the C&H RMR mount below it.

For an 18.5-inch M2 Tactical, the Nordic +3B tube is the flush-length choice. The tube kit brings the extension, cap, and spring. It still needs the NUT-BN-12-00 to join the MXT tube to an M2 magazine. Add the BCL-12 to support this +3B tube beside the barrel and gain two threaded accessory holes. The tube and nut are required; the clamp is the support choice for this build.

An M2 Field with a longer barrel needs a different tube length, and shell length changes the final loaded count. Use the barrel measurement and Nordic's fit chart instead of copying the Tactical choice. The M4 and SuperNova use different magazine hardware; NUT-BR-12-00 and the heavy-wall SuperNova clamp are not substitutes for this M2 path.

The Holosun 507COMP does not mount straight to an M2 receiver. On a Tactical receiver with the required holes, pair it with the C&H M2/M4 RMR mount. That plate accepts the RMR/SRO family and the listed Holosun C-footprint optics. The separate C&H ACRO mount is the enclosed-emitter path. These two C&H parts are documented M2/M4 exceptions; they do not make other M4 parts interchangeable.

Many Field models use a vent rib and may lack the receiver holes required by these plates. On those guns, keep the bead or use a rib-specific system whose maker names the exact rib and gauge. A gunsmith can assess drilling and tapping, but buying a plate first does not create the mounting interface.

A weapon light needs a solid interface before it needs output. The GG&G GGG-1621 adds a short Picatinny rail and web-sling points to classic M2 forward geometry. The Streamlight 88126 then supplies a complete dual-fuel light, mount, and switch package. A generation-correct Briley forend gives the same light an M-LOK path.

The GG&G combination mount and Nordic barrel clamp occupy the same general barrel-and-magazine area. Plan that space before ordering both. If the magazine system uses the Nordic clamp, place the light on its intended accessory hardware or on the correct Briley handguard instead of stacking two clamps.

Mesa's 91510 Urbino is the classic M2 stock path in this guide. It shortens length of pull to 12.5 inches and includes a cheek riser and recoil pad. Keep it on the classic 12-gauge M2 hosts named for this part. The redesigned 2026 M2 Field uses a different buttstock system, while the M2-G1, M4, and SuperNova need their own host-specific stock fit.

Briley draws the forend line at the 2023 redesign. A 2022-and-earlier M2 with the checkered factory forend uses HAN-BEN10BLK. A 2023-and-later M2 with the ribbed factory forend uses HAN-23BEN10BLK. Both are 10-inch M-LOK handguards, but the interfaces are different. The 2026 M2 Field's redesigned buttstock system is outside the classic Mesa 91510 fit.

Start with the marking on the barrel. The factory 83041P is an Improved Cylinder Crio tube and a useful baseline for patterning defensive or field loads. Indian Creek model 0005 is a tighter .665 turkey option for the stated Crio-family interface. Primos 69421 is a .650 Crio turkey tube for TSS, HEVI-Shot, copper-plated, and lead loads; Primos bars steel shot through that tube.

A fixed-choke barrel or an unthreaded slug barrel accepts none of these. The M4, Nova, and SuperNova use Benelli's Standard choke family, while Advanced Impact barrels are another separate interface. For the mechanics of constriction and patterning, read our shotgun choke guide.

GG&G GGG-1540 is the front QD attachment. It sits behind the classic M2 magazine cap and limits swivel rotation. GGG-1541 is the ambidextrous rear QD attachment. A two-point sling needs both ends; a one-point setup can use the rear part alone. Both parts depend on classic 12-gauge M2 mounting geometry. Check the front magazine-cap area and rear stock junction on your gun before choosing either part.