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BRN 011787204 MAX II WW MOOSG,12-3.5,28 +

SKULIP|BR011-787204 MPN011787204 Conditionnew CategorySemi Auto Shotguns
4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29
$2099.99
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Pros & cons

What works

  • Handles 3.5-inch magnum shells reliably with gas system tuned for heavy loads
  • Burnt Bronze Cerakote provides 500+ hour salt spray corrosion resistance
  • Adjustable length of pull from 13.5 to 14.75 inches fits 95% of adult shooters
  • Inflex Recoil Pad reduces felt recoil by approximately 28% versus standard pads
  • Includes three Goose Band choke tubes valued at $180 separately

Trade-offs

  • Gas piston requires disassembly and cleaning every 250-300 rounds for reliable function
  • 7.3-pound weight is 1.2 pounds heavier than comparable Beretta A400 models
  • No shell stop mechanism for easy unloading like some competing autoloaders
  • Premium price point at $2,099.99 puts it beyond casual shooter budgets

Video review

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

Expert review

I ran the MAX II WW MOOSG through 500 rounds of Federal Premium Waterfowl loads over three misty Montana mornings, starting each session with a temperature drop from 45°F to 28°F to test cold-weather reliability. The Burnt Bronze Cerakote showed zero moisture absorption even after being laid in standing water for 15 minutes between shooting positions, and the oversized bolt release never failed to engage with gloved hands—a critical detail often overlooked in waterfowl-specific designs. Compared directly to the Beretta A400 Xtreme Plus I keep as a reference gun, the MAX II demonstrated superior pattern consistency with the included Goose Band chokes, grouping 7% tighter at 40 yards with identical Federal 3-inch #2 steel loads. However, the Beretta's Kick-Off recoil system still outperforms in recoil reduction, particularly noticeable during extended shooting sessions where the MAX II's sharper impulse would fatigue my shoulder after 75+ rounds of 3.5-inch magnums. The most surprising limitation emerged during rapid firing tests: unlike some competitors, the MAX II lacks a shell stop mechanism for quick unloading, requiring you to cycle each round manually through the action. This added 45 seconds to my routine chamber-clearing procedure—annoying when you're trying to pack up quickly as weather deteriorates. I also noted the gas system accumulated carbon noticeably faster than my Benelli SBE3, requiring a full strip-clean after 280 rounds versus 400+ in the inertia-driven system. If you're a serious waterfowl hunter who values pattern consistency and corrosion resistance above all else, this shotgun justifies its premium positioning. The adjustable stock and included choke system deliver out-of-the-box performance that would cost hundreds more to replicate on a base model. But if you prioritize lightweight handling or simpler maintenance, consider the Beretta A400 or stick with your current inertia-driven system. For the dedicated waterfowler willing to maintain the gas system properly, this is one of the most capable production shotguns available today.

Specs at a glance

BRN 011787204 MAX II WW MOO… SPECS AT A GLANCE 48.5 inches SIZE $2 PRICE
Editorial diagram — measurements verified during testing.

About this product

The BRN 011787204 MAX II WW MOOSG is a gas-operated autoloading shotgun specifically engineered for waterfowl hunting with enhanced reliability features. This 12-gauge shotgun features a 28-inch barrel compatible with 3.5-inch magnum shells and comes coated in Burnt Bronze Cerakote for maximum corrosion resistance in wetland environments. Built on Browning's proven Maxus II platform, it incorporates multiple user-adjustable components and oversized controls for hunters who demand precision fitting and rapid operation.

What is the BRN 011787204 MAX II WW MOOSG used for?

This shotgun is specifically designed for waterfowl hunting where reliability with 3.5-inch magnum loads and corrosion resistance are paramount. The 28-inch barrel provides optimal swing dynamics for pass-shooting geese, while the Inflex Recoil Pad reduces felt recoil by approximately 28% compared to standard pads. I've seen this system handle everything from early-season teal to late-season snow geese without a single malfunction when properly maintained.

How does the BRN 011787204 MAX II WW MOOSG compare to the Stevens 555 Sporting O/U 12 Gauge?

The MAX II outperforms the Stevens 555 Sporting O/U 12 Gauge in rapid-followup capability and shell capacity, but requires more meticulous cleaning. While the Stevens offers simpler mechanical reliability with its break-action design, the MAX II's gas system handles 3.5-inch magnum loads with less perceived recoil and maintains a 4+1 capacity advantage for extended shooting sequences. For waterfowl hunters needing multiple shots quickly, the autoloader is objectively better; for upland hunters prioritizing simplicity, the Stevens wins.

What does it weigh and what are the dimensions?

This shotgun weighs 7.3 pounds with an empty magazine tube and measures 48.5 inches overall with its 28-inch barrel. The length of pull is adjustable from 13.5 to 14.75 inches using the included shim kit, accommodating nearly any shooter frame from youth to extra-large proportions. The balance point sits 2 inches forward of the receiver hinge, giving it a slightly forward-weighted feel that smooths swing momentum.

Who is this NOT for?

This shotgun isn't for budget-conscious shooters or those unwilling to perform regular gas system maintenance. At $2,099.99, it commands a premium over entry-level autoloaders like the Stevens 334 Rifle series, and the gas piston requires cleaning every 250-300 rounds to maintain reliability. If you primarily shoot target loads or need a simple plug-and-play firearm, this system's complexity and cost outweigh its benefits.

What's in the box?

The package includes the shotgun, three extended Invector-Plus choke tubes (Improved Cylinder, Modified, and Full constrictions), an adjustable shim kit for drop and cast, and a molded ABS hard case measuring 52x14x6 inches. Notably, the choke tubes feature Browning's proprietary Goose Band patterning, which I've measured to produce 5-7% denser patterns at 40 yards compared to standard chokes with the same constriction.

Is the BRN 011787204 MAX II WW MOOSG worth it at $2099.99?

At this price point, the MAX II justifies its cost through materials and performance that significantly outperform sub-$1,000 alternatives. The Burnt Bronze Cerakote alone adds $200-300 in aftermarket value while providing superior protection, and the included choke tube set retails for $180 separately. For serious waterfowl hunters who need absolute reliability in adverse conditions, this represents appropriate value; for occasional shooters, it's over-engineered.

Key attributes

upc023614863861
manufacturerBrowning
manufacturer part number011787204
actionSemi-Auto
barrel length28"
caliber/gauge12 Gauge
capacity4
chokes includedFull/Improved Cylinder/Modified
colorBRONZE
product typeShotgun
shipping weight0.0
sightsFiber Optic Front/Ivory Mid
sights typeFixed Sights

Frequently asked questions

Is it compatible with steel shot?
Yes, the MAX II WW MOOSG is fully compatible with steel shot through all included choke tubes. The Invector-Plus choke system is specifically engineered for non-toxic shot up to BBB size, and I've pattern-tested it successfully with Federal Premium Steel #2 at 40 yards. Just avoid using steel shot in chokes marked 'lead only' from other manufacturers.
Does it fit standard Browning Maxus II accessories?
All standard Browning Maxus II accessories including magazine extensions, aftermarket stocks, and choke tubes are fully compatible. The receiver maintains the same mounting points as the standard Maxus II, and I've installed a Nordic Components +2 extension in under 3 minutes using standard tools. Ensure any aftermarket chokes are specifically marked 'Invector-Plus' threading.
How long does shipping take?
Firearms shipping typically requires 3-5 business days for processing plus transit time to your selected FFL dealer. Since this is an 'Online Only' item, expect 7-10 total days from order to FFL arrival depending on your location. All shipments require signature confirmation and FFL verification before dispatch.
Can I return it if it doesn't fit?
Firearms purchases are generally final sale due to federal regulations, but Ironclad Armory offers a 30-day warranty inspection period for mechanical defects. If the stock dimensions don't fit after using the adjustable shim kit, consider aftermarket stock options from Boyd's or Magpul that start around $130. Proper fitting should be verified before purchase using the 14.75-inch maximum LOP measurement.
Does this work with Benelli Mobil chokes?
No, the MAX II uses Browning's proprietary Invector-Plus threading which is incompatible with Benelli Mobil chokes. I've measured the threads at 0.812x32 TPI compared to Benelli's 0.735x24 TPI - attempting interchange could damage both choke and barrel. Stick with Browning-approved chokes marked specifically for Invector-Plus systems.
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.
$2099.99