This is the newest and most advanced multi-service Advanced Combat Shirt (ACS), Type II (1/4 Zip).  This is the successor to P/N MCMS00030 and is sometimes known as the "Army Combat Shirt."  

Massif transitioned from the previous version of the Type II ACS (MCMS00030) to this one (MCMS00032) to incorporate Soldier feedback, lighter FR fabrics, and refined designs for better comfort under armor, durability, and ventilation in hot-weather combat. While both are FR 1/4-zip shirts with similar core functions, this one offers a more athletic fit, reduced weight, glove-friendly features, and enhanced materials—making it a meaningful upgrade rather than a simple rebrand.

Available in multiple colors including Genuine OCP (not "OEF-CP").  Made in the U.S.A. and 100% Berry Amendment Compliant.