The hot new 22 ARC delivers power and performance that rivals the .22-250, elegantly packed into a compact round that fits into the standard-sized AR-15. The RISE Armament Watchman XR Complete Upper puts the exciting new cartridge to work for extended range-shooting. It's well-made and loaded with premium components, like a billet receiver, 416R fluted barrel, skeletonized stock, and more. Chambered for 22 ARC 18" 416R stainless steel fluted, button-rifled, air-gauged and tested barrel Barrel is threaded 1/2x28 Forged billet aluminum upper 15.25" free-floating M-LOK handguard with top Picatinny rail Rifle-length gas system RISE ambidextrous charging handle Premium bolt carrier group with 9310 bolt Order today!