AR-15 Upper Receiver Parts

Build or upgrade your rifle with precision-fit AR-15 upper receiver parts—engineered for durability, compatibility, and serious performance. This collection includes everything you need to outfit or service the upper portion of your AR: stripped and complete uppers, barrels, handguards, gas blocks, muzzle devices, forward assists, and more. Whether you’re customizing a precision rig or replacing a worn-out part, these components are built to handle hard use and tight tolerances. Choose from trusted brands and military-spec options designed for 5.56 NATO,300 Blackout, .223 Wylde, and other popular calibers. Perfect for DIY builders, tactical upgrades, and high-round-count rifles.