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6MM ARC
The 6 mm Advanced Rifle Cartridge (6×38mm), or 6mm ARC for short, is a 6mm (.243) caliber full-power rifle cartridge introduced by Hornady in 2020, as a low-recoil, high-accuracy long-range cartridge designed for the AR-15 platform. All you need is a new barrel, magazine and bolt to convert AR-15 5.56/.223 rifle into the 6mm ARC. The 6mm ARC utilizes the same bolt head size as the 6.5mm Grendel, and 6.5mm Grendel AR-magazines have also been used successfully with the 6mm ARC.
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The Moriarti Armaments AR-15 12″ 6MM ARC Match Grade Gunner Upper Assembly / Mlok comes complete with a MATCH GRADE Stainless Steel 416R nitride coated Barrel, low profile Steel .750 gas block and a Stainless Steel carbine Gas tube. Upper is finished off with a Slim Free F..The Moriarti Armaments AR-15 12″ 6MM ARC Match Grade Gunner&nb...$499.95$699.95
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The Moriarti Armaments AR-15 AR-15 8″ 6MM ARC Match Grade Stainless Upper Assembly / Rocket Man comes complete with a MATCH GRADE Stainless Steel 416R Barrel, low profile Steel .750 tunable gas block and a Stainless Steel X-Large Gas tube. Upper is finished off with a..The Moriarti Armaments AR-15 AR-15 8″ 6MM ARC Match Grade...$599.95$699.95 -
The Moriarti Armaments AR-15 21″ 6MM ARC Match Grade Stainless Steel HBAR Upper Assembly comes complete with a MATCH GRADE Stainless Steel 416R Barrel, low profile Steel .875 Gas Block with Nitride Finish and a Stainless Steel Gas tube. Upper is finished off with a Free Float MLOK Handguar..The Moriarti Armaments AR-15 21″ 6MM ARC Match Grade Stainless...$699.95