The LWRC IC-A5 .300 Blackout 10.5? FDE Complete Upper Receiver (ICMKIIU3CK10S) brings LWRC’s advanced short-stroke gas piston technology and rugged build quality to shooters looking to elevate their AR-platform rifle. Chambered for .300 AAC Blackout and built around a cold-hammer-forged 10.5? barrel with a 1:7? twist and 1/2×28 threading, this complete upper is designed to provide excellent stability across a wide range of supersonic and subsonic ammunition while remaining ready for suppressors or muzzle devices. The mono-forged upper receiver and integrated 9? free-float rail deliver a durable, straight-line platform for optics and accessories, and the low-profile 2-position gas block lets you tailor gas flow for both suppressed and unsuppressed configurations. Finished in Flat Dark Earth for a tactical aesthetic, this upper includes iron sights and an ambidextrous charging handle for versatile operation, making it a premium choice for custom rifle builds that demand reliability, modularity, and high-performance function. LWRC IC-A5 .300 Blackout 10.5" 1:7" 1/2x28 FDE Complete Upper Receiver ICMKIIU3CK10S