5.56 16" Rear-Charging Rifle

5.56 16" Rear-Charging Rifle

Regular price $699.85

The Matrix Arms 5.56 Rear Charging Rifle is designed with accuracy and precision in mind. Using CNC Robodrills, Matrix Arms machines the core upper and lower receiver from 7075 T-6 aluminum forgings. The Matrix Arms handguard is then machined from 6061 aluminum extrusion; it is designed with additional cuts for heat dissipation and light weight features. The rifle is then equipped with a ½ x 28 standard A2 Flash Suppressor, mil-spec Carpenter 158 steel bolt, and staked carrier key. The bolt carrier group is MP tested to ensure reliability and precision in every shot. The 16” barrel is 5.56 NATO 4150 CMV with 1/8 twist for long, accurate shooting at the range or hunting grounds. This rifle also includes a high-end steel low-profile gas block, Hogue™ grip, adaptive tactical buttstock, and ships with a 30 round Pmag™.

Caliber: 5.56/.223


The Matrix Arms M15 stripped lower receivers are CNC machined from an American made mil-spec 7075 T-6 aluminum forging. They utilize a standard .250 take down/pivot pin hole and standard .156 fire control pins. Like our other products they are finished with a premium black anodize finish. Matched flawlessly to our 5.56 lower is our M15 Matrix stripped upper receiver. It features a Mil-Std 1919 rail with laser T markings along the top of the picatanny rail.

  • Made from 7075 T-6 aluminum forgings.


  • Free floating design.
  • 15″ Matrix Handguard (End cut options available).
  • Made from 6061 aluminum extrusions.

-Includes a 32-Round Glock™ Magazine

-Optics not included

*Some states may have laws limiting magazine capacity or have other feature-based restrictions. Please check and verify all laws and regulation pertaining to you prior to purchasing your Matrix Arms firearm.