6mm ARC
Arguably the best all-around ballistics ever squeezed from the AR-15 envelope — the catch is a modest ammo catalog and Grendel-bolt logistics.
Family
Rifle
Introduced
2020
Origin
Hornady, at a US DoD request, USA
History
Hornady built the 6mm ARC in 2020 on the 6.5 Grendel case at the request of a Defense Department entity wanting more reach from the AR-15 platform. It brings genuine long-range ballistics to the small-frame AR with modest recoil. It has grown steadily among precision gas-gun and deer-hunting crowds.
What it's used for
Iconic platforms
AR-15s with 6mm ARC barrels and Grendel-pattern magazines, plus bolt rifles from Howa, CZ, and Seekins.
Common load types
Match hollow point boat tail and polymer-tip hunting loads.
Reference only — not loading data, not ballistics advice, and KitID links to no ammunition sellers. Know your local law before you buy anything that goes bang.