ATI Omni Hybrid MAXX AR-15 5.56 NATO, 16 in Threaded Barrel, Free-Float M-LOK, Collapsible Stock, USA – Includes 3x 20-Round PMAGs
This American Tactical Omni Hybrid MAXX stands out with its metal-reinforced polymer receivers, patented construction, and a slick-side upper with brass deflector and dust cover. It is set up with a free-float M-LOK handguard and a continuous T-marked 1913 Picatinny top rail, plus practical add-ons including flip-up sights, an angled foregrip, and three 20-round PMAGs. Chambered in 5.56 NATO with a 16-inch threaded barrel, it delivers a feature-rich AR-15 configuration built in the USA.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present on the exterior surfaces. Please review the photos for a detailed view.
What’s Included
- Flip-up iron sights installed (front sight is Votatu)
- Angled foregrip installed on handguard
- Textured M-LOK rail cover panels installed on handguard
- Three 20-round Magpul PMAG polymer AR-15 pattern magazines
The Omni Hybrid MAXX uses ATI’s reinforced polymer receiver system, identifiable by the "OMNI HYBRID MULTI-CAL" lower marking and ATI patent numbers US9068786 and US6789305. The roll mark reads "American Tactical – Summerville, SC," and the rifle is made in the USA. Standard AR-15 controls are retained with SAFE/FIRE selector markings and a right-side magazine release.
The 16-inch barrel is threaded. Chambered in 5.56 NATO, the rifle offers a 20+1 capacity and runs a direct impingement action. The slick-side upper includes a brass deflector and a dust cover, and it omits the forward assist.
An aluminum free-float M-LOK handguard aligns with the receiver’s continuous T-marked 1913 Picatinny top rail, providing a consistent mounting surface. The package includes flip-up iron sights with a Votatu front, giving immediate sighting capability out of the box.
Furniture includes a 6-position collapsible polymer stock with a 13-inch length of pull and a textured polymer pistol grip for secure handling. The handguard is dressed with textured M-LOK rail cover panels, and an angled foregrip is installed for added control.




