Replace or upgrade your MCX gas system with this precision-engineered Piston Assembly designed for 16″ barrels chambered in 5.56 NATO. Machined from hardened steel with corrosion-resistant finish, this piston assembly restores consistent gas pressure and cycling for improved reliability and reduced fouling. Ideal for armorers, competition shooters, and tactical applications. Fits standard MCX piston-driven upper receivers; recommended to inspect gas rings and carrier for wear during installation. Backed by quality control and dimensional checks to ensure dependable field performance.
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