Mac 2 Tactical Marine Wood 12Ga 18.5 Nkl 6Rd
The SDS Arms MAC 2 Tactical Marine Wood 12-gauge shotgun is a home defense and duty weapon built on proven inertia-driven engineering. With an 18.5-inch barrel, 3-inch chamber, and 5+1 round capacity, it delivers reliable performance in a compact 47.80-inch overall length that doesn't sacrifice balance or handling. The electroless nickel marine finish paired with Turkish walnut furniture creates a weather-resistant platform that holds up in harsh environments while maintaining classic shotgun aesthetics.
What sets this MAC 2 apart is its straightforward operation and flexibility. The inertia system cycles a wide variety of ammunition without parts swaps or adjustments—crucial when you need reliability from field loads to duty rounds. The factory-drilled-and-tapped receiver comes pre-fitted with a Picatinny rail for optics or accessories, while the ghost ring rear sight and adjustable blade front post with white dot give you multiple aiming options out of the box. Both rear and front sights are windage and elevation adjustable, letting you dial in your zero without guesswork.
The 18.5-inch barrel uses the Benelli/Mobil pattern choke tube system—a huge practical advantage for shotgunners. Three choke tubes (1, 3, and 5) ship with the gun, so you can tune patterns for different loads and distances without buying extra barrels. Whether you're patterning for buckshot, bird shot, or slugs, you've got options right out of the box.
SDS Arms designed the MAC 2 series for Benelli M2 compatibility, meaning most aftermarket stocks, furniture, and upgrades in that ecosystem work here. Weigh 6 pounds 8 ounces, it's light enough for extended shooting sessions without being so featherweight that recoil becomes unmanageable. The marine nickel finish handles salt spray and moisture better than traditional blued steel, and the walnut furniture gives you a shotgun that looks as good as it functions.
Key Features
- Inertia-driven operating system cycles various loads without adjustment
- Ghost ring rear sight and adjustable blade front post with white dot contrast
- Factory-installed Picatinny rail for optics and tactical accessories
- Three Benelli/Mobil choke tubes included for pattern tuning
- Electroless nickel marine finish resists corrosion and salt spray
- Turkish walnut stock and forearm with traditional handling feel
- Compact 18.5-inch barrel for close-quarters effectiveness
- Compatible with most Benelli M2 aftermarket parts and furniture
Specifications
| Brand | SDS Arms |
| Model | MAC 2 Tactical Marine Wood |
| Gauge | 12 Gauge |
| Chamber | 3 Inch |
| Barrel Length | 18.5 Inches |
| Overall Length | 47.80 Inches |
| Weight | 6 lbs 8 oz |
| Capacity | 5+1 Rounds |
| Stock Material | Turkish Walnut |
| Finish | Electroless Marine Nickel |
| Rear Sight | Ghost Ring (Windage/Elevation Adjustable) |
| Front Sight | Blade Post with White Dot (Windage Adjustable) |
| Choke System | Benelli/Mobil Pattern |
| Chokes Included | 1, 3, 5 |
| Operating System | Inertia-Driven |
| Receiver | Drilled and Tapped with Picatinny Rail |
Frequently Asked Questions
Will this shotgun handle light target loads or only full-power rounds?
The inertia system is designed to cycle a wide variety of ammunition loads without requiring parts changes or adjustments to the operating system. You're not locked into one load type.
Can I use Benelli M2 aftermarket parts and furniture on this MAC 2?
Yes. SDS Arms built the MAC 2 series for compatibility with most aftermarket parts, furniture, and accessories designed for Benelli M2 shotguns, giving you flexibility for customization and upgrades.
What choke tubes come in the box?
The shotgun includes three Benelli/Mobil pattern choke tubes: 1, 3, and 5. This gives you the ability to tune your patterns for different loads and shooting distances right out of the box.
What kind of sighting setup does this have, and can I adjust it?
The MAC 2 Tactical Marine comes with a ghost ring rear sight and a blade-style front post featuring a white dot. Both are adjustable for windage, and the rear sight also has elevation adjustment, allowing you to dial in your zero precisely.
Is the marine nickel finish better for coastal or wet environments?
Yes. The electroless nickel marine finish is specifically designed to resist corrosion and salt spray better than traditional blued steel, making it well-suited for coastal, humid, or moisture-heavy conditions.

