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.

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.

You may also like

204 Ruger Uppers

Shop for a 6mm ARC Upper