ATI ATIG15MS556ML13 MilSport 5.56x45mm 30+1 16" Black Threaded Barrel, Matte Black Picatinny Rail Receiver, 13" M-LOK Handguard, Black 6 Position Rogers Super-Stoc, Black Polymer Grip

The ATI MilSport 5.56x45mm is a modern sporting rifle built on a proven platform, designed for shooters who want genuine mil-spec features without unnecessary frills. This rifle chambers the ubiquitous 5.56x45mm NATO round, making it ideal for target shooting, sport competition, and home defense. The 16-inch barrel strikes a practical balance between velocity and maneuverability, while the threaded muzzle gives you the option to add a suppressor or muzzle device down the road. Whether you're building your first AR or adding to an existing collection, the MilSport delivers the backbone of a reliable, expandable platform.

The receiver features full Picatinny rail mounting on top, giving you plenty of real estate for optics, iron sights, or backup systems. The 13-inch M-LOK handguard provides modern attachment points for lights, grips, slings, and other accessories without the need for traditional picatinny slots—you get a lighter, cleaner profile. The 6-position Rogers Super-Stock lets you dial in your cheek weld and length of pull, and the black polymer grip is comfortable and durable through years of range use. The rifle ships with a 30-round magazine plus one additional round in the chamber (30+1 capacity), giving you factory-ready capacity for most shooting disciplines.

All the controls and furniture are finished in matte black, so there's no glare to give away your position on the range, and the non-reflective look pairs well with modern tactical setups or hunting rigs. This is a no-nonsense rifle: it's threadbare of gimmicks, heavy on compatibility with the aftermarket ecosystem, and ready to run out of the box.

Key Features

• 16-inch threaded barrel in 5.56x45mm NATO—suited for target shooting, sport competition, and defensive use
• Matte black finish on receiver and all controls—non-reflective and professional-looking
• Full-length Picatinny rail on receiver for optics, iron sights, or other mounting systems
• 13-inch M-LOK handguard for lightweight, modern accessory mounting (lights, grips, slings)
• 6-position Rogers Super-Stock for adjustable length of pull and cheek weld
• Black polymer grip—durable and ergonomic
• 30+1 magazine capacity—ships with one 30-round magazine included
• Threaded muzzle ready for suppressors or muzzle devices

Specifications

Frequently Asked Questions

What's included with the ATI MilSport?

The rifle ships with one 30-round magazine and the ammunition handling capacity of 30+1 (30 in the magazine, one in the chamber).

Is the barrel threaded for a suppressor or muzzle brake?

Yes, the 16-inch barrel is threaded, which means you can attach a suppressor, muzzle brake, flash hider, or other threaded devices of compatible size and thread pitch.

Can I add a scope or red dot to the MilSport?

Yes. The receiver features a full-length Picatinny rail on top, which accepts any optic mount compatible with the mil-spec picatinny standard.

What kind of accessories can I attach to the M-LOK handguard?

The 13-inch M-LOK handguard accepts any M-LOK-compatible accessories, including tactical lights, vertical grips, handstops, rail sections, and sling mounts. You can also use standard picatinny rail sections via M-LOK adapters.