The ATI Alpha Maxx HGA is an AR-style pistol built with polymer upper and lower receivers and chambered for .223 REM / 5.56 NATO. It features a 7.50″ threaded steel barrel paired with a 7.00″ M-LOK handguard and flip-up front and rear sights. The pistol ships with a 60-round window magazine and a rear blade brace for enhanced control with a compact overall length of 22″. Designed for users who prioritize compactness and sustained capacity, the Alpha Maxx balances reduced footprint with high-capacity capability.
Key Specifications
- Caliber is .223 REM / 5.56 NATO.
- The barrel measures 7.50 inches and is specified as threaded steel.
- Standard capacity is 60 + 1 rounds with one 60-round magazine included.
- The action type is Semi-Auto.
- The handguard is a 7″ M-LOK polymer/compatible accessory rail.
- The receiver and stock material are Polymer.
- Muzzle threads follow the 5/8×24 NFA thread pattern.
- Overall weight is 6.95 lbs..
- Included sights are flip-up front and rear sights.
- Overall length is 22 inches.
Compact, well-equipped and straightforward, the Alpha Maxx HGA gives users a high-capacity AR-style platform in a reduced-length package. The combination of a threaded 7.50″ barrel, 7″ M-LOK handguard and a 60-round window magazine makes it suitable for applications where a compact form factor and extended magazine capacity are priorities. Built with polymer receivers and practical features like flip-up sights and a rear blade brace, it provides a blend of manageability and sustained performance for informed shooters seeking a capable pistol in a familiar AR configuration.
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