Customize your 6MM ARC Complete Upper with an optic, muzzle device, rail, bolt carrier group, magazine, or charging handle from our matched selection. Your 6MM ARC AR 15 Upper Receiver will arrive turn-key and ready to shoot out of the box. The 6MM ARC utilizes efficient, high-BC bullets to deliver unprecedented performance from the AR-15 platform.

Grab a high quality 6mm ARC upper that unparalleled accuracy, versatility, and low recoil for the AR-15 caliber. The 6mm arc for sale provides better ballistics than the 5.56 NATO and at the same time offer a lighter ammo system plus less recoil than an AR-10 308 winchester setup.

Pro2a Tactical has the latest 6mm ARC Uppers on the market. The 6mm ARC (Advanced Rifle Cartridge) developed by Hornady, was voted AR-15 caliber of the year 2020 and is becoming an extremely popular round with hunters. The 6mm ARC's high ballistic coefficient and high sectional density offers less drag and less energy loss at greater distances.

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The foundation of this all new complete 6mm ARC upper from ODIN Works is a forged or Billet upper receiver bearing the ODIN name. On the upper is an ODIN XCH, eXtended Charging Handle, making charging the gun a much easier task.

DTT 'Lightshow II - Gold 6MM ARC' 18-inch AR-15 6mm ARC Nitride Rifle Upper Build Kit

Shop our Selection of AR15 Upper Receivers. Uppers from brands like Anderson Manufacturing, Radical Firearms, Aero Precision, Colt, Bravo Company & More.

Developed by Hornady, the 6MM ARC was designed to bring long-range precision into a smaller package that fits the AR-15 platform, making it ideal for both hunting and tactical applications. Its ballistics outperform many existing cartridges in the AR-15 world, offering high performance for those who demand versatility from their rifle.

This Sanders Armory Performance Series upper assembly has a 18″ 6MM ARC 1:8 Twist Match Grade Straight Fluted Stainless-Steel Barrel that has been air gauge tested. The upper receiver is an AR15 / M16 Mil-Spec Billet Upper Receiver, the Receiver is milled from 7075-T6 aircraft aluminum, is precision machined to mil-spec M16/M4 specifications ...