American Tactical Alpha Maxx 410
American Tactical Imports · Shotgun · In Production · 2026
Also known as: ATI Alpha Maxx .410, Alpha Maxx Gen3 410, Alpha Maxx SGA
Overview
The American Tactical Alpha Maxx 410 is an AR-platform semi-automatic .410 bore shotgun (firearm-classed, non-NFA) built on a gas-operated AR-15 style action with a detachable 5-round box magazine. The Gen3 carbine model uses an 18.5-inch smooth-bore barrel chambered for 3-inch shells, a 13-inch free-float M-LOK polymer handguard, flip-up sights, and a carbon-fiber-infused nylon polymer upper and lower receiver. A recoil buffer tames felt recoil, and it ships with a cylinder choke tube.
Specifications
| Weight (empty) | 3901 g (137.6 oz) |
| Barrel Length | 470 mm (18.50") |
| Action Type | Gas Operated Short Stroke |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 5 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 411 m/s (1348 fps) |
| Effective Range | 40 m (44 yd) |
| Barrel Rifling | None |
| Frame Material | Polymer |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Matte Black |
Calibers
- .410 Bore · primary — also known as .410 Gauge, .410 Shotshell, 36 gauge
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety, Trigger Disconnector
- Features: Ar15 Platform, M Lok Handguard, Free Float Handguard, Flip Up Sights, Accessory Rail, Detachable Box Magazine, Carbon Fiber Infused Polymer Receiver, Recoil Buffer
Variants
Production
Production years: 2024-present
Gen3 .410 model; civilian sporting/defense market
Origin
Country of origin: United States
Notes
Sold both as a complete firearm and as an upper-receiver shotgun conversion kit for standard AR-15 lowers. A bird's-head/braced pistol variant (HGA) uses an 8.75-inch rifled barrel with a 1:20 twist. Weight figure (~8.6 lb) is the manufacturer/retailer-listed weight for the 18.5-inch carbine model.
Background
American Tactical's Alpha Maxx line answered a niche craving among AR builders: a magazine-fed, gas-operated .410 shotgun that drops onto a standard AR-15 lower, turning a rifle platform into a low-recoil scattergun without an NFA stamp.