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 barrelmagazine 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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  • AR-15 12″ 6MM ARC GUNNER SEMI-AUTO PISTOL / MLOK / SBA3
    AR-15 12″ 6MM ARC GUNNER SEMI-AUTO PISTOL / MLOK / SBA3. FFL transfer item. All NFA rules apply. CURRENT ETA: 6-8 WEEKSFeatures:Barrel: 12” length Barrel chambered in  6MM ARC 416R , Nitride coated Rate: 1:7.5Feed Ramps: M4BCG: M16 Case Hardened 8620 Steel Nitride Coated , 6..
    AR-15 12″ 6MM ARC GUNNER SEMI-AUTO PISTOL / MLOK / SBA3. FFL transf...
    $799.95$1,299.99
  • AR-15 12″ 6MM ARC Match Grade Gunner  Upper Assembly / Mlok
    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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  • AR-15 18″ 6MM ARC Match Grade Stainless  Upper Assembly / Rocket Man
    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
  • AR-15 18″ 6MM ARC STAINLESS SEMI AUTO RIFLE/ SIDE CHARGER / MBA3
    AR-15 18″ 6MM ARC STAINLESS SEMI AUTO RIFLE/ SIDE CHARGER / MBA3. FFL transfer item. All NFA rules apply. Features:Barrel: 18” length Barrel chambered in  6MM ARC 416R Stainless Steel Hand Lapped 5R Rifling. Rate: 1:7.5Feed Ramps: M4BCG: M16 Case Hardened 8620 Steel Nitride ..
    AR-15 18″ 6MM ARC STAINLESS SEMI AUTO RIFLE/ SIDE CHARGER / MBA3. F...
    $999.95$1,499.99
  • AR-15 21″ 6MM ARC Match Grade Stainless Steel HBAR Upper Assembly
    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...
    $499.95$699.95