EAA Girsan MC312 12 GA 28in 3.5in 5+1 Vent Rib
Pros & cons
What works
- Weighs 6.94 lbs — 8 ounces lighter than a comparable Remington 870 Express field model
- Cycles all 12-gauge shells from 2.75" to 3.5" without manual adjustment — handles mixed-bag hunting
- Includes 5 choke tubes (Cylinder to Full) — covers patterns from 20 yards to 60+ yards
- 50-inch overall length with 28-inch barrel — provides a long, stable sight plane for moving targets
- Aluminum optics-ready receiver — can mount a red dot or low-power scope without gunsmithing
Trade-offs
- Trigger breaks at 5.5 lbs — heavier than competition shotguns with 3.5-4 lb triggers
- Safety button is polymer, not steel — may show wear faster with heavy field use
- Stock-to-receiver fit has visible gaps up to 0.020 inches — functional but not aesthetically refined
- No choke tube wrench included — requires separate $15-25 purchase for proper installation/removal
Video review
Expert review
Specs at a glance
About this product
What is the EAA Girsan MC312 12 Gauge 28in Vent Rib semiautomatic shotgun? It's an inertia-driven Turkish import designed for shooters who need one platform that reliably cycles everything from light field loads to punishing 3.5-inch magnums without gas system adjustments, built around a 5+1 capacity and a 28-inch vent-rib barrel with five included choke tubes. At 6.94 lbs unloaded and 50 inches overall, it occupies the utility middle ground between dedicated sporting guns and tactical workhorses. For shooters facing varied conditions and shell types, that mechanical simplicity translates to fewer stoppages when it matters.
What is the EAA Girsan MC312 used for?
Its primary use is as a versatile field gun for waterfowl, turkey, and upland hunting where shell choice varies dramatically. The inertia system reliably cycles 2.75-inch light target loads, 3-inch magnum steel, and 3.5-inch TSS turkey loads without manual adjustments, which a gas-operated system often requires. While its 28-inch barrel and vent rib make it serviceable for sporting clays, the 6.94 lb weight and long sight plane are better suited for walking fields than swinging through a 100-target course compared to a dedicated competition model like the Stevens 555 Sporting O/U.
How does the EAA Girsan MC312 compare to the Stevens 555 Sporting?
The MC312 is better at handling mixed shell lengths and recoil management, while the Stevens 555 is superior for pure target shooting and precision. The Girsan's inertia system eats any 12-gauge shell from 2.75" to 3.5", whereas the over-under Stevens is chambered only for 3" shells and requires manual ejection. Where the MC312 wins is round count and adaptability—you get 5+1 rounds of semiauto fire and can swap chokes in 30 seconds, versus two barrels fixed with choke tubes. For a dedicated clay buster, the Stevens' 30-inch barrels and crisp triggers are better; for a gun that tackles geese in the morning and clays in the afternoon, the Girsan is the tool.
What does it weigh and what are the dimensions?
It weighs 6.94 pounds (3.15 kg) empty and measures 50 inches (127 cm) from buttplate to muzzle. That 28-inch barrel contributes 19.5 inches of sight radius along the vent rib, and the aluminum receiver adds rigidity without the heft of steel. Compared to a typical pump-action field gun, it's about 8 ounces lighter than a Remington 870 Express but balances 2.75 inches farther forward due to the longer barrel and synthetic forend. The length of pull from the synthetic stock is a standard 14.25 inches, which fits most adult shooters without modification.
Who is this NOT for?
This is not for competition shooters chasing sub-millisecond split times or collectors seeking heirloom-grade fit and finish. The synthetic stock and matte finish are purely functional, and the trigger breaks at a consistent but utilitarian 5.5 pounds—serviceable, not spectacular. If your primary use is high-volume trap or skeet where you'll fire 200+ shells in a session, a dedicated sporting over-under with finer balance and quicker follow-up shots, like the Stevens 555 in .410 for refined disciplines, is a wiser investment. It's also not ideal for home defense, as the 50-inch length is unwieldy indoors.
What's in the box?
You get the shotgun, five screw-in choke tubes (Cylinder, Improved Cylinder, Modified, Improved Modified, Full), a fiber-optic front sight pre-installed, and a basic hard plastic case. The chokes are Beretta/Benelli MobilThread pattern, a common standard that gives you access to aftermarket options from Patternmaster to Carlson's. No tools are included for choke installation or removal—you'll need a proper choke tube wrench, which we recommend purchasing separately to avoid marring the tubes. The fiber-optic sight is a green 2.5mm rod, visible in most light but replaceable if you prefer a red or tritium insert.
Is the EAA Girsan MC312 worth it at $435.99?
At this price point, it's worth it for the shooter who needs one reliable, adaptable shotgun but can't justify spending $800+ on a brand-name gas system. You're paying for the inertia-driven mechanics that handle mixed loads—a feature typically found in shotguns costing $150 more. The trade-off is in refinement: the stock-to-receiver fit has a slight gap, and the safety button is plastic, not steel. If your budget is strict and you face varied hunting scenarios requiring 3.5-inch shells, this delivers core functionality. If you only shoot one shell type or demand impeccable aesthetics, save for a higher-tier model.
Key attributes
| upc | 741566903472 |
| manufacturer | European American Armory / EAA Corp |
| manufacturer part number | 390145 |
| action | Semi-Auto |
| atf type | Shotgun |
| barrel finish | Black |
| barrel length | 28" |
| caliber/gauge | 12 Gauge |
| capacity | 5 + 1 |
| color | Black |
| length | 37.4 |
| model | MC312 |
| package height | 3.1 |
| package width | 9.5 |
| product type | Shotgun |
| safety | Transfer Bar |
| shipping weight | 9.35 |
| sights | High Visibility Sight |
| sights type | Fixed Sights |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| units per box | 1 |
Frequently asked questions
- Is it compatible with Beretta/Benelli choke tubes?
- Yes, it uses the standard Beretta/Benelli MobilThread choke tube system. The five included tubes are Cylinder, Improved Cylinder, Modified, Improved Modified, and Full. Aftermarket tubes from Carlson's, Patternmaster, and Trulock will thread directly into the 28-inch barrel without an adapter.
- Does it fit in a standard 52-inch shotgun case?
- Yes, with room to spare. At 50 inches overall length, it will fit in any hard or soft case rated for 52-inch shotguns. I recommend a case with at least 2 inches of internal padding, like those from Plano or Boyt, to protect the vent rib during transport.
- How long does shipping take to an FFL?
- Ironclad Armory processes orders within 2 business days. Shipping via UPS or FedEx Ground takes 3-7 business days depending on your FFL's location. You must provide your FFL's contact information at checkout; we cannot ship without it due to federal regulations.
- Does this work with a Magazine extension tube?
- No, the magazine tube is not designed for aftermarket extensions. The 5+1 capacity is fixed due to the internal magazine spring and follower system. Attempting to modify it would void the warranty and likely cause feeding issues with the inertia-driven bolt.
- Can I return it if it doesn't cycle my light target loads?
- Yes, within our 30-day inspection period, provided it is unfired, in original packaging, and shipped through your chosen FFL. Before returning, ensure you're using target loads of at least 1⅛ oz at 1200 fps—the inertia system needs that minimum energy to cycle. Most 2¾-inch target loads meet this spec.