Out of all other products out there, these are the 4 best Benelli M4 red dot sights (Also work on M2).
We have tested and evaluated many small size reflex sights on long guns and shotguns based on their durability, dot clarity, overall performance and value of money.
For a 12GA shotgun, you definitely need something rock solid!
Let's check them out below...
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Trijicon RMR Type 2 - Best Overall
Scalarworks SYNC RMR Mount (Buy This Here)
Why it's the best - The open emitter Trijicon RMR is the gold standard for micro red dot sights, and it still holds the crown for being the most durable and high performing reflex sights for pistols, rifles and shotguns.
Increased Slug Accuracy - 3.25 MOA dot size or higher are great for getting on target fast and accurate with slugs and buckshots up to 20+ yards assuming tight pellet pattern ammo is used.
Super Low Profile - The shooter can quickly acquire the sight picture with comfortable cheek weld.
For slug/buckshot related zeroing questions, please check out how to zero a shotgun red dot on our site here.
Handles Low Recoil and Heavy Recoil 12GA & Retains Zero.
- Battle proven durability
- Small and non snag
- Much tighter battery grip than GEN 1 models
- Co witness with iron sights
- Open emitter attracts debris easily
- Sight removal required for battery swap
Why we picked this - Aimpoint Micro is the world's toughest micro red dot sight made for battle rifles that can endure rough environments including explosions. It works just like a Trijicon RMR but bigger and more protected.
Closed Emitter - Unlike an exposed emitter red dot, the Aimpoint Micro is an enclosed system that protects internal from dirt, water, mud, sand and more.
Superior Durability - Built like a tank with forged 7075 T6 aluminum housing that protects internals and hold zero against sharp recoil impulse
Low Profile & Lightweight - The low profile design fits great on the M4, and its so light for a low drag and snag free shotgun setup
Use This On The Benelli M4 And Other Rifles You May Have!
- Warfighter's choice
- Fully enclosed emitter design
- Works on 12 GA and other carbines
- Tons of aftermarket mounts available
Holosun HS507C X2 - Best For Value
Why The Holosun HE507C X2 - The Holosun 507C X2 is by far the best alternative to the Trijicon RMR and saves you a lots of money for something else, and it performs just like an RMR.
2X More Battery life - The Shake Awake technology saves tons of battery life by deactivating the optic when at rest, then turns it back on upon movement. Up to 100,000 hours
Uses RMR Footprint - No special adapter or milling required! Just use the same Trijicon RMR adaptor plate to mount the optic
Solar Power BackUp - Solar fail-safe power kicks in immediately when the battery dies, so the optic will always remain on.
At this price point, You'll save a ton of money and get a sight that is as good as the Trijicon RMR. Be sure to click the button below for the best deal.
- Similar durability as Trijicon RMR
- Side battery access tray
- Same RMR footprint
- Much more affordable
- Works on 12 GA, carbines and pistols
- Open emitter design
Burris FastFire 3 - Best Lightweight RDS
Why Buy The Fast Fire 3 - The super light weight Burris FastFire 3 provides a 12GA shotgun with fast target acquisition speed for anyone starting out new or experienced shooters.
Top Battery Access - Swap battery battery easily without sight removal, and it lasts up to 5 years
Auto Brightness Control - Matching the light conditions to provide the appropriate reticle brightness for the shooter. Competition shooters never have to worry about the reticle being too bright or too dimmed while moving through stages
Durable & Affordable - The battery lasts as long as 4+ years and it's by far the most affordable open emitter reflex optic for pistol use.
- Very small and affordable like the Vortex Venom
- Picatinny rail mount included
- Super lightweight for hunting and competition
- Non duty durable
- Can easily break when dropped on its lens
What To Look For In A Home Defense Shotgun Optic
Is an optic necessary on a home defense shotgun?
The Benelli M4 and M2 semi auto 12GA shotgun kicks shoots fast and kicks hard depend on the load. Mounting a red dot sight helps the shooter track the reticle during after each follow up shot.
It's not necessary to have an optic on a home defense shotgun, but it will help get on target faster if you train with it.
In fact, adding a weapon light on the Benelli is actually more important to see in the dark and protect your family.
Get Aftermarket Optic Mounts
You can mount the optic at about 1/3 cowitness height on the picatinny top rail or you can use the low profile Scalarworks SYNC RMR mount that sits 100% cowitness with the iron sights.
Both systems work.
The Aimpoint Micro, Trijicon RMR/SRO and Holosun 507C are by far the best micro optics for the Benelli M4 and M2.