22 ARC is Hornady’s newest speed demon, flinging 75- to 88-grain .224 bullets at blistering velocities while maintaining a COAL compatible with AR magazines. Our debut line of 18″ and 20″ barrels is cut from 416R stainless, finished in QPQ, and rifled 1:7 to spin long A-Tip and ELD-Match bullets. Extended rifle-length gas systems and optimized port diameters tame the higher pressure curve, and each barrel ships with a matched bolt to handle the unique case head. Pair with a high-ratio charging handle, lightweight carrier, and a precision trigger, and you’ll have a varmint or competition rig that eclipses .223 Wylde trajectories with ease.