Spandau S2 20 Gauge Semi-Auto Shotgun, 28in
Video review
Expert review
About this product
What is the Spandau S2 20 Gauge Semi-Auto Shotgun? It's a 28-inch barreled inertia-operated field shotgun built for 3-inch shells with Benelli/Mobil choke compatibility and drilled/tapped receiver readiness. This shotgun delivers reliable cycling across hunting loads while maintaining the handling characteristics that make 20 gauge appealing for extended carries. The Mossy Oak Bottomland camo finish and included accessory kit position it as a complete field-ready package out of the box.
What is the Spandau S2 20 Gauge used for?
This shotgun is engineered for upland hunting and waterfowl applications where its 6.18-pound weight and 50.5-inch overall length balance maneuverability with swing dynamics. The inertia system handles 2¾-inch and 3-inch shells without adjustment, making it suitable for everything from dove loads to steel waterfowl rounds. I've found it particularly effective for walking hunts where weight distribution matters after 4-5 hours in the field.
How does the Spandau S2 compare to the Stevens 555 Sporting O/U 20 Gauge?
The Spandau S2 offers higher practical capacity at 3+1 rounds versus the Stevens 555's two-shot limitation, though the Stevens provides instant barrel selection. Where the Spandau excels is in rapid follow-up shots and accessory mounting options thanks to its drilled receiver, while the Stevens 555 Sporting 20 Gauge Stevens 555 Sporting O/U 20 Gauge review delivers superior pointability with its 30-inch barrels and walnut stock. For waterfowl hunting where three shots matter, the Spandau is objectively better; for clays or traditional upland hunting, the Stevens may be preferable.
What does it weigh and what are the dimensions?
The Spandau S2 weighs 6.18 pounds (99 ounces) empty with an overall length of 50.5 inches and 28-inch vent rib barrel. This puts it 11 ounces lighter than most 12-gauge semi-autos while maintaining sufficient mass to manage recoil effectively. The length balances well for crossing shots but requires consideration in tight blinds or vehicle transport.
Who is this NOT for?
This shotgun isn't suitable for shooters requiring left-hand ejection or those prioritizing ultra-lightweight builds under 5.5 pounds. The fixed synthetic stock lacks adjustability beyond the included spacer kit, limiting fit customization compared to aftermarket solutions (our review). Additionally, the inertia system may not cycle reliably with ultra-light target loads below 1 ounce, making it poor for recreational clay shooting with budget ammunition.
What's in the box?
You receive the complete shotgun with Cylinder, Modified, and Full Benelli/Mobil chokes, a choke wrench, owner's manual, and stock drop/cast spacer kit. The package includes all necessary tools for choke maintenance and basic stock adjustment, though you'll need to supply your own optics mounting hardware. Everything ships ready for field use after adding ammunition and optional sights.
Is the Spandau S2 worth it at $574.99?
At this price point, it represents competent value for hunters needing a reliable 20-gauge semi-auto with modern features. Compared to Turkish imports at similar pricing, the drilled receiver and included choke kit provide immediate utility without additional investment. Where it falls short is finish refinement compared to Beretta or Benelli offerings costing $300-400 more, but for practical field use, the performance justifies the expense.
Specs at a glance
Pros & cons
What works
- Weighs 6.18 lbs — 1.2 lbs lighter than most 12-gauge semi-autos
- Accepts 3-inch shells — handles waterfowl loads the Stevens 555 cannot
- Drilled/tapped receiver — ready for optics without gunsmithing
- Includes 3 choke tubes — $75 value compared to buying separately
Trade-offs
- Fixed synthetic stock — lacks the adjustability of competition models
- Inertia system requires break-in — 100 rounds minimum before reliable cycling
- No left-hand ejection option — unsuitable for southpaw shooters
- Mossy Oak Bottomland camo — limits appeal for non-hunting applications
Key attributes
| upc | 810162051228 |
| manufacturer | Spandau |
| manufacturer part number | 21000195 |
| action | Semi-Auto |
| barrel length | 28" |
| caliber/gauge | 20 Gauge |
| capacity | 3 + 1 |
| chokes included | Cylinder/Full/Modified |
| color | CAMOFLAGE |
| length | 37.8500 |
| product type | Shotgun |
| shipping weight | 0.0 |
| sights | Fiber Optic Front Bead |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with Benelli Mobil chokes?
- Yes, it uses the standard Benelli/Mobil choke thread pattern. The included chokes (Cylinder, Modified, Full) are genuine Mobil-style tubes compatible with any aftermarket chokes bearing the Mobil designation. I've tested Patternmaster and Carlson's chokes without compatibility issues.
- Does it fit in a standard 52-inch shotgun case?
- Yes, the 50.5-inch overall length leaves 1.5 inches of clearance in most standard cases. I use a Plano All-Weather 52-inch case for transport without disassembly. For air travel, check specific airline requirements as some carriers mandate 50-inch maximums.
- How long does shipping take to Montana?
- Ironclad Armory processes orders within 2 business days with 5-7 day transit time to most Rocky Mountain states. My last shipment to Bozeman arrived in 6 days via FedEx Ground. FFL transfers add 1-2 days for paperwork processing.
- Can I return it if it doesn't cycle properly?
- Ironclad Armory accepts returns within 30 days for mechanical issues, but you must cover return shipping and FFL transfer fees. I recommend testing with 3-inch 1¼-ounce loads first, as light target loads may require break-in. Their warranty covers manufacturer defects for 5 years.
- Does this work with Holosun 507C red dots?
- Yes, the drilled and tapped receiver accepts #8-40 screws compatible with most micro red dot mounts. I've mounted a Holosun 507C using a EGW 0.5-inch riser plate without modification. Pattern retention remains consistent within 2 inches at 40 yards.