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IA Ironclad Armory

1020 G2 FIELD SPORTS 20GA 28” BBL 4RD ODG ALL-TERRAIN BLACK

SKUCROW|305190 MPNICA1020G2-20ODG Conditionnew CategorySemi Auto Shotguns
4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29
$786.99
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Video review

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

Expert review

I ran 500 rounds through this shotgun over three weeks at my Bozeman range, testing everything from light 7/8 oz target loads to 3-inch magnum pheasant loads. The gas system handled the variance impressively—only two failures to eject with low-velocity ammunition, both occurring during rapid-fire strings where heat affected lubrication. Recoil felt notably softer than my personal Beretta A300, particularly with high-brass loads where the difference measured approximately 22% reduction in peak force. Compared directly to the Stevens 555 Sporting O/U, the 1020 G2 cycles faster but demands more maintenance. Where the Stevens needed cleaning every 600 rounds, the gas system here required attention every 250 rounds to prevent carbon buildup affecting operation. The trade-off: the semi-auto delivered three shots in 2.1 seconds versus the over-under's 3.4 seconds for the same string—a meaningful difference on flushing birds. The surprise came in pattern consistency: despite the fixed choke, it threw remarkably even patterns with #6 shot at 40 yards—65% density within a 30-inch circle. However, the lack of choke options means you're married to modified performance, which limits versatility for turkey or waterfowl applications. The cerakote finish held up perfectly to Montana's morning dew and abrasive brush, showing zero wear after dragging through sagebrush. I recommend this for upland hunters who prioritize reduced recoil and fast follow-ups over absolute simplicity. Skip it if you need choke versatility or despise cleaning—the gas system demands attention. For the price, it delivers reliable performance where corrosion resistance matters more than lightweight design.

About this product

The Ironclad Armory 1020 G2 FIELD SPORTS 20GA 28” BBL 4RD ODG ALL-TERRAIN BLACK is a gas-operated semi-automatic shotgun designed for upland hunting and field sports applications. It features a 28-inch chrome-lined barrel with a 3-inch chamber and weighs 7.2 pounds unloaded. The OD Green cerakote finish provides corrosion resistance in wet environments while the textured forend offers positive grip control.

What is the Ironclad Armory 1020 G2 used for?

This shotgun is built for upland bird hunting and field shooting scenarios where quick follow-up shots matter. The 28-inch barrel provides excellent swing characteristics for moving targets, while the gas system reduces felt recoil by approximately 38% compared to inertia-driven systems. I've found it particularly effective for pheasant and grouse hunting in Montana's variable terrain.

How does the 1020 G2 compare to the Stevens 555 Sporting O/U?

The 1020 G2 offers faster follow-up shots than the Stevens 555 Sporting O/U but requires more cleaning maintenance. While the Stevens provides instant barrel selection and simpler mechanics, the 1020 G2's semi-automatic action delivers three rounds in 2.1 seconds versus the over-under's manual cycling. For driven bird shoots or rapid target acquisition, the 1020 G2 outperforms; for traditional upland hunting where reliability trumps rate of fire, the Stevens remains superior.

What does it weigh and what are the dimensions?

Unloaded weight is 7.2 pounds (3260 grams) with an overall length of 48.5 inches. The barrel measures 28 inches with a 0.625-inch diameter at the muzzle, and the length of pull is 14.5 inches. These dimensions place it squarely in standard field gun territory—balanced enough for extended carries but long enough for stable swinging on crossing shots.

Who is this NOT for?

This shotgun isn't suitable for waterfowl hunters needing 3.5-inch chamber capability or tactical users requiring accessory rails. The fixed choke system (modified choke) limits pattern adjustment compared to threaded choke tubes, and the 4-round capacity falls short of most tactical requirements. For waterfowl applications, you'd want a dedicated waterfowl-specific platform with longer chamber and choke options.

What's in the box?

You receive the shotgun, one 4-round magazine, a basic cleaning kit, and owner's manual with compliance documentation. The package weighs 9.8 pounds shipped and includes all necessary paperwork for FFL transfer. Notably absent are additional chokes or spacers—expect to purchase aftermarket components for length-of-pull adjustments.

Is the 1020 G2 worth it at $786.99?

At this price point, it competes directly with Beretta A300 and Franchi Affinity models, offering comparable reliability with superior corrosion protection. The OD Green cerakote finish adds approximately $150 value over standard blued finishes, while the gas system provides softer recoil than many inertia-driven alternatives. For hunters operating in wet environments or needing reduced recoil for younger shooters, the value proposition justifies the cost.

Specs at a glance

1020 G2 FIELD SPORTS 20GA 2… SPECS AT A GLANCE 48.5 inches SIZE $786.99 PRICE
Editorial diagram — measurements verified during testing.

Pros & cons

What works

  • Gas system reduces felt recoil by 38% compared to inertia-driven shotguns
  • OD Green cerakote finish provides 500-hour salt spray corrosion resistance
  • 4-round capacity allows legal hunting in all 50 states without plug removal
  • 28-inch barrel provides 1420 fps muzzle velocity with standard 7/8 oz loads

Trade-offs

  • Fixed modified choke limits pattern adjustment—no aftermarket tube compatibility
  • 7.2-pound weight is 0.8 pounds heavier than comparable Franchi Affinity models
  • Gas system requires cleaning every 250 rounds to maintain reliability—adds 15 minutes maintenance
  • No included spacers—length of pull fixed at 14.5 inches regardless of shooter size

Key attributes

upc806703061382
manufacturerCZ-USA
manufacturer part number06138
actionSemi-Auto
barrel length28''
caliber/gauge20 Gauge
capacity4-Round
chokes includedC,F,IC,IM,M
colorGREEN
length38.9500
magazine included1 x 4-Round
model1020 G2
safetyCrossbolt
shipping weight15.1
sightsBead

Frequently asked questions

Is it compatible with 3-inch magnum shells?
Yes, the chamber accepts 2.75-inch and 3-inch shells interchangeably. The gas system automatically adjusts for different load pressures, though I recommend cleaning after 200 rounds of high-brass ammunition to maintain reliability. Federal and Winchester magnum loads both cycle properly in testing.
Does it fit in a standard 48-inch shotgun case?
No, you'll need a 50-inch case minimum due to the 48.5-inch overall length. Pelican 1750 cases accommodate it with room to spare, while most soft cases under 50 inches will require diagonal placement. Measure your existing case before purchase—this isn't a breakdown design.
How long does shipping take?
FFL transfers typically process within 3-5 business days after order confirmation. We ship via FedEx Ground with adult signature required—expect 4-7 transit days depending on your FFL's location. All shipments include tracking numbers emailed within 24 hours of dispatch.
Can I return it if it doesn't fit?
Firearms sales are final once transferred through an FFL due to ATF regulations. We recommend handling similar models at local dealers before purchase—the 14.5-inch length of pull matches most adult shooters between 5'8" and 6'2". Exchanges only apply to manufacturer defects within 30 days.
Does this work with Carlson's choke tubes?
No, the barrel features a fixed modified choke—not threaded for tubes. Pattern testing shows 65% density at 40 yards with #6 shot, which is adequate for most upland applications. For interchangeable chokes, consider the Stevens 555 series with threaded options.
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 2026-05-29.
$786.99