LWRCI ICMKII A5 .300 Blackout 10" Bbl Tungsten Grey SBR Upper ICMKIIU3TG10

The LWRCI ICMKII A5 .300 Blackout 10″ SBR Upper in Tungsten Grey is a premium short‑barrel upper receiver assembly built around LWRC International’s proprietary short‑stroke gas piston A5 system, designed to bring .300 AAC Blackout performance to compact rifle and SBR builds. It features a cold‑hammer‑forged barrel with a 1:7″ twist rate and 5/8″‑24 TPI threaded muzzle, finished in Tungsten Grey Cerakote for corrosion resistance and rugged durability. The monoforge upper includes a free‑float modular rail with integrated mounting surface, adjustable two‑position gas block for suppressed or unsuppressed tuning, LWRCI Skirmish backup iron sights, and an ambidextrous charging handle. Designed to mate with a standard AR‑15 lower, this upper delivers the reliability and premium construction expected from LWRCI’s IC‑MKII line for close‑quarters, duty, or precision SBR applications.