The RISE 6mm ARC AR-15 Upper Receiver is designed to deliver outstanding precision, featuring an 18 inches 416R stainless steel threaded barrel known for its exceptional accuracy. This high-performance barrel ensures tight, consistent groupings, making it perfect for shooters who demand pinpoint precision in both tactical and competitive settings. Crafted from durable 416R stainless steel, it offers superior resistance to wear and corrosion, ensuring long-lasting reliability. Whether you're looking to enhance your shooting experience at the range or tackle challenging field conditions, the RISE 6mm ARC Upper Receiver delivers the performance and durability needed to take your AR-15 to the next level. The 18 inches 416R stainless steel barrel is button rifled, air-gauged and tested for superior precision, with a threaded muzzle for attachment options The free-floating skeletonized aluminum handguard features a continuous 12 o'clock picatinny rail, M-LOK slots, (4) threaded steel sling swivel QD inserts, a snag-free front and a patent-pending attachment lock to maintain zero The RISE ambidextrous charging handle enhances ease of use for both right and left handed users, even with optics and gloves The premium Bolt Carrier Group features a 9310 bolt, individually MPI tested, a staked gas key and a durable black nitride finish for enhanced reliability Receiver forged billet aluminum, offering strength, durability and precision machining for a solid firearm receiver The product is backed by RISE's lifetime warranty and more-bang-for-your-buck guarantee, ensuring long term value and satisfaction