Rifles · Various

AR-15 (6mm ARC)

Precision AR cartridge · Wind-bucking varmint work · Competition upper

About the AR-15 (6mm ARC)

The 6mm ARC pairs a high-ballistic-coefficient 6mm bullet with the AR-15's standard magazine pattern, so a build needs only a barrel and bolt change to step up from 5.56. The cartridge holds supersonic flight well past the ranges where small-caliber 5.56 loads lose effectiveness, which extends the rifle's useful distance without a magnum's recoil. Shooters use it for varmint control, precision matches, and hunting small to medium game where wind drift decides the shot. The lower receiver, magazines, and manual of arms remain unchanged from any other AR-15.

Best ammo for the AR-15 (6mm ARC)

Live picks from Top Ammo Supply — in-stock 6mm ARC ammunition, sorted by price per round. Prices and stock refresh throughout the day.

6mm ARC training & range ammo

Full metal jacket and lead loads — the cheapest way to train.

HornadyHORNADY FRONTIER 6MM ARC 105GR FMJ BRASS CASED 20RD BOX 20rd$25.37$1.268/rd

6mm ARC hunting loads

Soft point and expanding bullets for field use.

HornadyHORNADY PRECISION HUNTER RIFLE AMMO 6MM ARC 103GR ELD-X 20RD 20rd$35.63$1.782/rd

6mm ARC match & precision loads

Match-grade projectiles for precision and competition.

HornadyHORNADY PRECISION HUNTER RIFLE AMMO 6MM ARC 103GR ELD-X 20RD 20rd$35.63$1.782/rd

Specifications are approximate and can vary by variant and production year. Verify with the manufacturer before purchase. Ammunition purchase and shipping restrictions vary by jurisdiction — Top Ammo Supply enforces shipping rules at checkout.