The Gen 3 ATI Alpha Maxx SGA in .410 bore (brand part no. GAX41013ML) is a semi-automatic shotgun built around an 18.5-inch smoothbore barrel with a 2.5-inch chamber, giving shooters a compact, tactical .410 platform. American Tactical / ATI equips the Alpha Maxx with an M-LOK accessory rail and flip-up front and rear sights for a modern, modular build. Among semi-auto shotguns in the semi-auto shotguns category, the Alpha Maxx SGA favors shooters who want a compact, AR-inspired .410 for home defense or recreational shooting.

Key Specifications

• Chambered in .410 bore.
• Chamber size is 2.5-inch.
• Operates as a semi-automatic shotgun.
• Features an 18.5-inch smoothbore barrel.
• Feeds from a magazine with a 5-round capacity.
• Built with an M-LOK accessory rail.
• Fitted with flip-up front and rear sights.
• Finished in black.
• Equipped with a manual safety.
• Built with a 13-inch polymer stock.

Frequently Asked Questions

What chamber size does it accept? A 2.5-inch .410 bore chamber.

Does it have an accessory rail? Yes, an M-LOK rail for mounting lights, lasers, or grips.

What sights does it come with? Flip-up front and rear sights.

Buy the ATI Alpha Maxx SGA .410 Bore Shotgun

A compact, M-LOK-equipped .410 semi-auto is exactly what the Alpha Maxx SGA delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.