LWRC IC-A5 5.56mm NATO 10.5" 1:7" 1/2x28 FDE Complete Upper Receiver ICA5U5CK10S

LWRC ICA5U5CK10S IC-A5 5.56mm NATO 10.5" 1:7" 1/2x28 FDE Complete Upper Receiver

The LWRC IC-A5 5.56mm NATO 10.5" 1:7" 1/2x28 FDE Complete Upper Receiver ICA5U5CK10S is an exceptional choice for building a custom, high-performance AR. Initially designed for the U.S. Army's Individual Carbine Program, this LWRC ICA5U5CK10S upper receiver features LWRC's patented short-stroke gas piston system, renowned for its unparalleled reliability and ease of maintenance in any condition. The system pairs seamlessly with a nickel-boron coated bolt carrier, providing unmatched wear and corrosion resistance, as well as permanent lubricity. The Monoforge design includes an integrated 9" SPR style rail base and a low profile 2-position adjustable gas block, optimizing performance with or without a suppressor. The upper rail section has a special cutback design to accommodate a low-profile gas block while maintaining full 9" modular rails on the sides and bottom of the hand guards. Additional features include an LWRCI cold hammer-forged NiCorr-treated barrel, LWRCI skirmish backup iron sights, an LWRCI birdcage (A2) flash hider, an ambidextrous charging handle, an H2 buffer, and a carbine length action spring, making this upper receiver a top-tier component for any custom AR build.