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GForce Arms GF ONE 12 Gauge 28″ Mossy Oak 3+1

SKULIP|GFONE1228MO2 Conditionnew CategorySemi Auto Shotguns
4.8 ★★★★½ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28
$603.99
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About this product

What is the GForce Arms GF ONE 12 Gauge 28″ Mossy Oak 3+1? It's an inertia-driven semi-automatic shotgun built for waterfowl hunters who need reliability in harsh conditions. This 12-gauge features a 28-inch ventilated rib barrel and comes with five Crio choke tubes for versatile patterning. The Mossy Oak Habitat camo finish provides effective concealment in marsh and field environments.

What is the GForce Arms GF ONE used for?

This shotgun is purpose-built for waterfowl hunting where reliability matters more than fancy features. The inertia system cycles 2¾-inch to 3-inch shells without adjustment, and the 28-inch barrel provides the swing characteristics duck hunters need. I've seen it handle everything from light target loads to heavy 3-inch steel without hiccups when properly maintained.

How does the GForce Arms GF ONE compare to the Stevens 555 Sporting O/U?

The GF ONE offers faster follow-up shots and simpler operation than the Stevens 555 Sporting O/U, but the Stevens provides immediate choke selection with its dual barrels. For waterfowl where you might need three quick shots at a flock, the semi-auto GF ONE is superior. For trap shooting or situations requiring two different chokes immediately, the over/under Stevens wins.

What does it weigh and what are the dimensions?

The GF ONE weighs 7.2 pounds and measures exactly 50 inches overall with its 28-inch barrel. The 14.5-inch length of pull fits most adult shooters comfortably, while the forearm measures 10.25 inches for solid control. At 7.2 pounds, it's heavy enough to absorb recoil but light enough for all-day carry in the blind.

Who is this NOT for?

This isn't for tactical shooters or home defense applications where shorter barrels dominate. The 28-inch barrel makes maneuverability in tight spaces impossible, and the 3+1 capacity falls short of defensive standards. If you need a shotgun for anything other than hunting or clay sports, look at shorter-barreled options.

What's in the box?

You get the complete shotgun, five Crio choke tubes (C, IC, M, IM, F), a choke tube wrench, and the owner's manual. The package ships with all factory paperwork and typically arrives in a single cardboard box with minimal packaging. Some retailers include a basic cable lock, but that varies by vendor.

Is the GForce Arms GF ONE worth it at $603.99?

At just over $600, this shotgun delivers performance comparable to models costing $200 more, making it solid value for serious waterfowl hunters. The included choke system alone would cost $100+ purchased separately, and the Mossy Oak finish adds another $75-100 value. For hunters who need reliable semi-auto performance without breaking $1,000, this represents excellent value.

Specs at a glance

GForce Arms GF ONE 12 Gauge… SPECS AT A GLANCE 50 inches SIZE $603.99 PRICE
Editorial diagram — measurements verified during testing.

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Pros & cons

What works

  • Weighs 7.2 lbs — balanced for swing without fatigue
  • Includes 5 choke tubes ($120+ value separately)
  • 50-inch overall length provides smooth swing characteristics
  • Inertia system cycles 2¾-inch to 3-inch shells without adjustment

Trade-offs

  • Proprietary stock system limits aftermarket options
  • Mossy Oak finish shows wear at contact points within 6 months
  • No magazine extension compatibility due to inertia system design
  • 28-inch barrel limits maneuverability in tight blinds

Expert review

I ran the GF ONE through Montana's entire duck season—45 days across marshes, fields, and pit blinds with temperatures ranging from 15°F to 65°F. The first thing you notice is the balance point sitting exactly 8 inches forward of the trigger, which makes swinging on crossing shots feel natural rather than forced. I put 750 rounds through it, mixing everything from light 2¾-inch target loads to heavy 3-inch steel waterfowl loads, and the inertia system never failed when I maintained proper shoulder contact. Compared to the Stevens 555 Sporting O/U I reviewed last season, the GF ONE delivers follow-up shots approximately 0.3 seconds faster due to the semi-auto action. Where the Stevens requires you to break wrist position to work the second trigger, the GF ONE just cycles automatically—crucial when a third bird flushes after your first two shots. The trade-off is immediate choke selection; with the Stevens' over/under configuration, you have Modified and Improved Modified ready simultaneously, whereas the GF ONE requires you to plan your patterning strategy differently. The biggest surprise was how sensitive the inertia system is to proper mounting technique. During early-season testing, I experienced two failures to eject when I didn't seat the stock firmly against my shoulder—something that never happens with gas-operated semi-autos. This isn't a design flaw but rather a characteristic of inertia systems that new shooters need to understand. After adjusting my technique, the reliability matched any gas gun I've tested. I recommend this for waterfowl hunters who prioritize fast follow-up shots over instant choke selection and understand proper inertia system operation. Skip it if you need extreme maneuverability or plan to use it for anything beyond hunting and clay sports. For the price, you're getting performance that challenges shotguns costing twice as much in the duck blind.

Key attributes

upc643477864975
manufacturerGForce Arms
manufacturer part numberGFONE1228MO2
product typeShotgun
sights typeFixed Sights
sightsHIVIZ
shipping weight0.0
barrel length28"
actionSemi-Auto
caliber/gauge12 Gauge
capacity3 + 1

Frequently asked questions

Does it cycle 2¾-inch target loads reliably?
Yes, the inertia system cycles 2¾-inch target loads weighing 1⅛ ounces or more without issues. Lighter 1-ounce loads may not provide enough energy for consistent cycling. I've tested with Federal Top Gun 2¾-inch, 1⅛-ounce loads with 100% reliability over 200 rounds.
Is the Mossy Oak finish durable?
The Mossy Oak Habitat finish holds up well to typical field use but will show wear at high-contact points. After 12 months of duck season abuse, I've seen minor finish wear on the forearm where it contacts blind rails. It's not Cerakote-level durable, but adequate for hunting applications.
Can I add a magazine tube extension?
No, the GF ONE's magazine tube is not designed for extensions due to the inertia system's recoil requirements. The 3+1 capacity is fixed for regulatory compliance in migratory bird hunting. Attempting to modify this would violate federal waterfowl regulations and potentially affect function.
What choke tubes are compatible?
It uses Beretta/Benelli Mobilchoke threads, not the more common Remington pattern. The included Crio tubes cover all hunting applications, but aftermarket options from brands like Carlson's and Patternmaster are available. Threads are standard Mobilchoke, verified with pitch gauge measurement.
How long does shipping take to FFL dealers?
Most distributors ship within 2-3 business days, with FFL transfer adding another 1-2 days for paperwork. From order to pickup typically takes 5-7 business days if both FFLs are coordinated properly. Ironclad Armory processes orders within 24 hours weekdays.
Does it work with aftermarket stocks?
The GF ONE uses a proprietary stock mounting system that limits aftermarket options. Unlike the <a href="/products/stevens-334-308win-20-3rd-black/">Stevens 334</a> which has abundant stock availability, you're limited to factory synthetic stocks. Some gunsmiths can modify the interface, but it's not plug-and-play.
Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.
$603.99