Rise Armament RA-22ARC 22 ARC 18" 1:7 Twist Complete Upper - Gray Anodized

The Rise Armament RA-22ARC complete upper receiver drops onto any MIL-SPEC AR-15 lower and delivers a dedicated 22 ARC chambering in a precision-built package. The upper receiver is machined from forged billet aluminum and finished in a hardcoat gray anodized coating for long-lasting corrosion resistance.

At the heart of the build is an 18" 416R stainless steel barrel that is button-rifled, air-gauged, and tested for consistent bore dimensions. A fast 1:7 twist rate stabilizes modern high-BC .22-caliber projectiles, and the muzzle is threaded 1/2x28 for standard AR-15 muzzle devices.

A free-floating skeletonized aluminum handguard surrounds the barrel and provides a continuous 12 o'clock Picatinny rail for optics, with M-LOK slots along the sides and bottom for accessories. The rifle-length gas system is tuned to keep cycling smooth and reliable across a wide variety of 22 ARC loads.

The upper ships fully assembled with a premium bolt carrier group and an ambidextrous charging handle included, so mating it to your AR-15 lower is the only step required to get on target. The serialized lower receiver is not included.