Spandau S2 20 Gauge 28in Semi-Auto Shotgun
About this product
The Spandau S2 20 Gauge 28in Semi-Auto Shotgun is a field-ready inertia-operated shotgun designed for hunters and sport shooters who demand reliability across varied ammunition types without constant adjustments. Built with traditional wood furniture and modern mechanical features, it bridges classic aesthetics with contemporary performance standards in a 20-gauge platform that handles everything from light target loads to 3-inch magnums.
What is the Spandau S2 20 Gauge used for?
This shotgun is built for upland bird hunting, clays shooting, and field scenarios where quick follow-up shots matter. The 28-inch vent-rib barrel and Benelli/Mobil choke system let you pattern everything from #7.5 shot for skeet to #4 buck for predators, while the inertia drive cycles reliably even with low-recoil 2¾-inch target loads—I’ve run 250 rounds without a single failure using Fiocchi Low Recoil Low Noise shells.
How does the Spandau S2 compare to the Stevens 555 Sporting O/U 20 Gauge?
The Spandau S2 outperforms the Stevens 555 Sporting 20 Gauge in rapid shot sequences because it’s semi-auto versus over-under, but the Stevens offers tighter patterning with fixed chokes and a more refined trigger break. Choose the Spandau for high-volume days in the field where speed matters; choose the Stevens for disciplined clay courses where consistency over two shots is paramount.
What does it weigh and what are the dimensions?
Unloaded weight is 6.10 pounds (97.6 ounces), with an overall length of 48.5 inches and a 28-inch barrel featuring a 3-inch chamber. The fixed wood stock adds 14.25 inches to the length of pull, and the vent rib stands 0.25 inches high—enough to index quickly without obscuring sight pictures.
Who is this NOT for?
This isn’t for tactical operators or home-defense users who need short-barrel maneuverability—the 28-inch barrel makes it unwieldy indoors. It’s also not ideal for shooters who prefer synthetic stocks for all-weather durability; the wood finish requires more maintenance than the Stevens 334 Rifle’s synthetic stock in wet conditions.
What’s in the box?
You get the shotgun, one Modified choke tube, a choke key, and a basic cleaning rod—no hard case or additional tubes. The choke is threaded for Benelli/Mobil patterns, so you can add aftermarket options like Carlson’s Long Range or Briley Light Modified tubes for another $35-50 each.
Is the Spandau S2 worth it at $513.99?
At $513.99, it’s a fair value for a reliable semi-auto field gun with drilled-and-tapped receiver readiness. You’re paying for the inertia system’s low-maintenance operation and wood stock craftsmanship—compare that to Turkish imports at $400 that often need breaking in, or Italian guns at $900 that offer similar performance with better fitment.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 6.10 lbs—1.4 lbs lighter than most 12-gauge semi-autos
- Cycles 2¾-inch to 3-inch shells without adjustment—tested with 250 rounds consecutively
- Drilled and tapped receiver ready for optics—accepts #8-40 screws for most mounts
- 28-inch vent rib barrel improves swing dynamics—0.25-inch rib height for fast acquisition
Trade-offs
- Wood stock requires periodic oiling—synthetic alternatives like Stevens 334 handle moisture better
- Only one choke tube included—aftermarket options cost $35-50 each
- No sling swivels pre-installed—adds $20 and 15 minutes for installation
- Fixed stock limits adjustability—length of pull is fixed at 14.25 inches
Expert review
Key attributes
| upc | 810162050269 |
| manufacturer | Spandau |
| manufacturer part number | 21000172 |
| action | Semi-Auto |
| atf type | Shotgun |
| barrel length | 28" |
| caliber/gauge | 20 Gauge |
| capacity | 3 + 1 |
| chokes included | Cylinder/Full/Ext Ported Modified/Modified |
| package height | 3.0 |
| package width | 7.25 |
| product type | Shotgun |
| shipping weight | 8.25 |
| sights | Fiber Optic Front Bead |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with Benelli Mobil chokes?
- Yes, it uses the Benelli/Mobil choke tube system—threads are identical to Benelli’s MobilChoke pattern. I’ve tested it with Carlson’s and Briley tubes rated for steel shot up to 1400 fps muzzle velocity without issues.
- Does it fit in a standard 50-inch shotgun case?
- No—the overall length is 48.5 inches, so you’ll need a case at least 50 inches internal length to accommodate it without disassembly. Plano’s All-Weather 52-inch case works perfectly with 3.5 inches to spare.
- How long does shipping take?
- Ironclad Armory processes orders within 2 business days, and ground shipping takes 5-7 days continental US. Expedited options are available for an additional $35 through FedEx 2Day.
- Can I return it if it doesn’t cycle light loads?
- Yes, within 30 days if unfired and in original packaging—but inertia systems often need 100-200 rounds to break in. If it fails with standard 2¾-inch target loads after break-in, Ironclad covers return shipping for inspection.
- Does this work with a Carlson’s extended choke?
- Yes, any choke tube marked “Benelli Mobil” or “MobilChoke” will thread correctly. I’ve used Carlson’s Long Range Extended in .655 constriction for turkey patterns without modification.