Description
The Spandau S2 12 Gauge 24in Obsession (model 21000190) is an inertia-operated semi-automatic shotgun dipped stock to muzzle in Mossy Oak Obsession, a pattern designed around spring turkey woods. It has a 3 inch chamber, a 24 inch vent rib barrel, Benelli Mobil pattern chokes and a 3+1 capacity, and it is built in Turkey by Spandau Arms for SDS Arms of Knoxville, Tennessee.

Spandau S2 12 Gauge 24in Obsession Overview
Lipsey’s lists this S2 at 6 pounds 14 ounces and 48.75 inches overall. The receiver, barrel, stock and forend all carry the Obsession finish, so there is no shiny metal to catch a gobbler’s eye when you shift the gun on your knee. The controls are oversized, the loading gate is widened for faster reloads, and SDS says the S2 accepts many accessories built for the Benelli M2, which opens up a large aftermarket of stocks, extended bolt handles and choke tubes.
Built for Spring Woods
A 24 inch barrel is a practical length for turkey hunting. It is short enough to swing from a seated position against a tree and to carry through brush, yet long enough to keep a decent sighting plane. Obsession blends greens and browns that suit the leaf-out of April and May. Pair it with a facemask and gloves, since the gun itself is now the least visible thing you carry.

Inertia Operation and Recoil
The S2 cycles on inertia rather than gas. Recoil moves the gun back while the bolt body stays put for an instant, compressing a spring that then runs the action. The receiver stays clean and the gun stays light, but it also means more felt recoil than a gas gun with heavy 3 inch turkey loads. Inertia actions also need firm shoulder contact; a loose hold from an awkward seated position can short-cycle the next round.
Choke and Pattern Work
The barrel threads for Benelli Mobil pattern tubes, so aftermarket turkey chokes are easy to find. A dedicated constriction such as a Carlson TSS tube usually tightens patterns at 40 yards. Pattern at least three loads on paper before opening day, since every barrel prefers different shot sizes. Tungsten super shot hits hard at range but costs several dollars per shell.

Sights and Optics
The factory sight is a fiber optic front bead. For head-and-neck shots a red dot is a real upgrade, and you should confirm the receiver drilling and choose a mount before adding one. A bead alone works fine at 30 yards if you keep your cheek firmly on the stock.
Ownership Notes
Spandau is a young brand next to Benelli and Beretta, so resale value and local gunsmith familiarity are lower. Keep the box, wrench, shims and manual. A light coat of oil on the bolt is enough; inertia guns do not like a gummed-up action in cold mornings.
State Laws and Ownership
Spring turkey rules vary widely by state, including shot-size limits, shooting hours and capacity limits. Some states restrict hunting with semi-automatic shotguns holding more than three shells. Read your state digest, and ask your receiving FFL to confirm the transfer before ordering.
Specifications
- Brand: Spandau (SDS Arms)
- Model: S2, part number 21000190
- UPC: 810162050283
- Gauge: 12 gauge, 3 inch chamber
- Action: inertia-operated semi-automatic
- Barrel: 24 inches, vent rib
- Capacity: 3+1
- Choke system: Benelli Mobil pattern
- Sights: fiber optic front bead
- Finish: Mossy Oak Obsession on stock, forend, receiver and barrel
- Weight: 6 lb 14 oz (Lipsey’s)
- Overall length: 48.75 inches (Lipsey’s)
- Safety: two-position push button
Before You Buy
Federal law requires that this shotgun ship to a licensed FFL dealer, where you will complete ATF Form 4473 and a background check. You must be 18 or older to buy a rifle or shotgun from a dealer. Some states and cities add their own permits, waiting periods or hunting equipment rules, so confirm with your receiving FFL that it can be transferred to you before you order.
Who It Is For
The Spandau S2 12 Gauge 24in Obsession is a great fit for turkey hunters who want a full-camo semi-auto for spring gobblers, hunters who sit against trees and need a handy 24 inch barrel, and buyers who want Benelli M2 accessory compatibility at a lower price.
Buy the Spandau S2 12 Gauge 24in Obsession at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Spandau S2 12 Gauge 24in Obsession online and ship it to your local FFL dealer, or browse our full selection of firearms for more shotguns. For factory details, visit SDS Arms.







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