Every 6MM ARC Upper we sell can be configured to your specifications. 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.

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The 6MM ARC utilizes efficient, high-BC bullets to deliver unprecedented performance from the AR-15 platform. Because the versatile 6MM ARC does much of what larger cartridges can and everything that smaller cartridges can’t, it has been tested, selected and fielded by a specialized group within the U.S. DoD for their multipurpose combat rifle program.

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6MM ARC Uppers For Sale

What is a 6mm ARC Upper Receiver?

The 6mm ARC Upper Receivers fires the 6mm Advanced Rifle Cartridge from an AR15 rifle. The extraordinary ballistic performance of 6mm ARC have made it one of the most popular upgrades the AR15 platform has seen in years.

Why Does the 6mm ARC Upper Receiver excel as a hunting rifle?

Whilst the upper receiver isn’t the only part of the rifle that makes it a proficient hunting weapon, the 6mm ARC uses lighter ammunition, with reduced deviation from the target (a flatter flight path), and less than 9 foot-pounds of recoil, it’s one of the lightest options available for varmint or small-game hunters.

What is the twist rate of a 6mm ARC Upper Receiver?

The twist rate required by the 6mm ARC upper receiver is 1:7.5. Meaning that the bullets used in the upper receiver will complete one revolution every 7.5 inches. Additionally, the bullet drop of a 6mm ARC upper receiver is around 22.2 inches at 400 yards.

What is the effective range of a 6mm ARC Upper Receiver?

6mm ARC has an effective range of well over 1000 yards.

What is the ideal barrel length for a 6mm ARC Upper Receiver?

The 6mm ARC upper receiver is designed to accommodate barrel lengths of between 16 and 24 inches. This wide-length variety gives you the option to choose the right length of barrel that suits your shooting style and what you’ll be using the weapon system for.

What BCG do I use with a 6mm ARC Upper?

6mm ARC Uppers require a 6.5 Grendel Type 2 Bolt Carrier Group (BCG).

What Magazine do I use with a 6mm ARC Upper?

6mm ARC Uppers require a 6mm ARC Magazine.

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