Mac 2 Tactical Marine 12Ga 18.5 Nkl 6Rd

The SDS Arms MAC 2 Tactical Marine is a 12-gauge shotgun built for home defense and duty use, built around an inertia operating system that cycles reliably across a variety of loads without requiring adjustments or parts swaps. The 18.5-inch barrel with Benelli/Mobil choke tube compatibility lets you dial in patterns for any shot type—bird, buckshot, or slug—while the electroless nickel marine finish resists corrosion in harsh environments. At just 6 lbs 8 oz with a polymer stock and forearm, it remains handy and maneuverable in tight spaces, yet the mechanical design delivers unmatched balance for a working shotgun.

The Tactical Marine comes sighted and ready: a fully adjustable ghost ring rear sight pairs with a protected blade front post topped with a white dot, both windage/elevation adjustable for precise aiming. The receiver ships drilled and tapped from the factory with a Picatinny rail already installed, so mounting an optic, light, or other accessories takes minutes. Whether you're outfitting for home security, duty applications, or harsh coastal environments, this shotgun's straightforward controls and robust construction make it reliable under pressure.

SDS Arms designed the MAC 2 series for broad compatibility with M2 Benelli aftermarket parts, furniture, and accessories—meaning you can customize the platform to fit your role without hunting for proprietary components. The 3-inch chamber accepts standard and magnum loads, and the 5+1 capacity gives you six rounds on board. This is a no-nonsense, low-maintenance shotgun that handles like it was born in a defensive scenario.

Key Features

• Inertia operating system cycles reliably without adjustment across standard and magnum loads
• Adjustable ghost ring rear sight and protected blade front post with white dot for precision aiming
• Factory-drilled and tapped receiver with Picatinny rail for optics and light mounting
• Benelli/Mobil choke tube system (includes 1/3/5 tubes) for pattern tuning to any shot type
• Electroless nickel marine finish resists corrosion in harsh conditions
• Polymer stock and forearm balance durability with lightweight handling (6 lbs 8 oz)
• Compatible with most M2 Benelli aftermarket parts and accessories

Specifications

Frequently Asked Questions

What's the effective range for home defense?

The 18.5-inch barrel and adjustable sights are optimized for close-quarters home defense work. With buckshot, you'll maintain tight patterns at typical indoor distances; the included choke tubes allow you to adjust the pattern to match your specific setup and ammunition.

Can I mount a red dot or tactical light on this shotgun?

Yes. The receiver comes drilled and tapped from the factory with a Picatinny rail already installed, making it straightforward to add an optic, light, or combination mount without gunsmithing.

Will this shotgun reliably cycle all types of 12-gauge ammo?

The inertia operating system is designed to cycle a variety of loads—standard and magnum—without requiring parts changes or system adjustments. No tweaking needed; it adapts to what you feed it.

Is this shotgun compatible with aftermarket Benelli M2 accessories?

Yes. SDS Arms engineered the MAC 2 series for broad compatibility with M2 Benelli aftermarket parts, furniture, and accessories, giving you plenty of customization options from the aftermarket ecosystem.