The ATI Alpha Maxx in 5.56mm/.223 Remington (MPN ATIGAX55613ML60) pairs a 16-inch heavy barrel with a 1-in-8-inch twist and a high-capacity 60-round magazine, giving shooters extended range time between reloads. American Tactical/ATI fits this rifle with a 13-inch M-LOK polymer handguard and a telescoping stock. No sights ship standard, leaving the top rail open for an optic. Among AR-platform rifles in the AR rifles category, this Alpha Maxx favors range shooters who want a high-capacity 5.56 AR-15 with a heavy barrel for sustained shooting.

Key Specifications

• Chambered in 5.56mm/.223 Remington.
• Rifled at a 1-in-8-inch rate of twist.
• Features a 16-inch heavy barrel.
• Includes a 13-inch M-LOK polymer handguard.
• Feeds from a 60-round magazine.
• Built on a semi-automatic AR-15 platform.
• Ships with no sights installed, leaving the rail open for an optic.
• Includes a manual safety.
• Weighs approximately 8.55 pounds.
• Feeds from one 60-round magazine included with the rifle.

Frequently Asked Questions

What is the magazine capacity? A 60-round magazine, well above a standard 30-round AR magazine.

Does this rifle come with sights? No, it ships without sights, leaving the top rail open for an optic.

What kind of barrel does this rifle have? A 16-inch heavy-profile barrel with a 1-in-8-inch twist.

Buy the ATI Alpha Maxx 5.56mm, 60-Round

A high-capacity, heavy-barreled 5.56 AR-15 is exactly what this Alpha Maxx delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.