ATI Alpha MAXX RIA 5.56 NATO 16in 13in M-LOK 60rd FDE

The ATI Alpha MAXX RIA is a semi-automatic rifle in the Maxx series built for high-capacity, modular use. It is chambered for .223 Remington / 5.56 NATO and features a 16-inch threaded barrel with a 1:8 twist rate. The rifle includes a 13-inch polymer M-LOK handguard, flip-up front and rear sights, and ships with a 60-round magazine and an ATI MM4 stock.

Key Specifications

• The action is Semi-Auto.
• The caliber is .223 REM/5.56 NATO.
• The barrel length is 16 inches.
• The barrel is described as Threaded.
• The rate of twist is 1:8.
• The thread pattern is 1/2x28.
• The stated capacity is 60 + 1.
• The handguard/rails are a 13-inch M-LOK polymer design.
• The stock is an ATI MM4.
• The sights are Flip Up Front & Rear.

The Alpha MAXX combines sustained-capacity capability with common AR-style ergonomics and accessory mounting. With a threaded 16-inch barrel, an extended M-LOK handguard for attachments, and an ATI MM4 stock, the platform is suited for applications that require high magazine capacity and modularity while maintaining straightforward controls and sighting options.