Ross Zheng Engineering UNIMAG

Every company has to start somewhere. For Ross Zheng Engineering, the company’s starting point is the all new UNIMAG multi-caliber magazine.

Aware of a rapidly evolving AR-15 marketplace where modularity is the standard and quick-change barrels bring affordable multi-caliber options to shooters, Ross Zheng Engineering promises the UNIMAG will set a new standard.

The UNIMAG provides function to existing AR-15 platforms, as well as encouraging the development and expansion of new AR-15 multi-caliber designs.

The UNIMAG has been proven reliable for several types of ammunition, to date:

Ammo — Capacity

  • 223 / 556 / 300 BLK (based on 223 case) — 30
  • 5.45×39 — 29
  • 6.8 SPC — 26
  • 7.62×39 — 25
  • 6.5 Grendel — 24
  • 458 SOCOM — 12

New levels of reliability and versatility are achieved by the patented design of a controlled-tilt follower, which maintains stability and greatly reduces jamming.

This feature works together with the self-adjusting magazine shell to regulate the fit of various cartridge diameters, which brings a value-packed product into the hands of AR-15 enthusiasts.

The UNIMAG has an MSRP of $49.99. The UNIMAG is expected to ship in the fall of 2015, but pre-orders are being accepted on the Ross Zheng Engineering website.

For more information on the UNIMAG, please visit

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