LWRC International LWRCI ICMKII A5 .300 Blackout 10" Bbl Tungsten Grey SBR Upper ICMKIIU3TG10S

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. LWRC International LWRCI ICMKII A5 .300 Blackout 10" Bbl Tungsten Grey SBR Upper ICMKIIU3TG10S