Microbest Hard Chrome BCG

Microbest is a respected OEM behind many duty-grade bolt carrier groups. The Microbest Hard Chrome BCG brings a high-spec chrome-finished 5.56 carrier group to the civilian market with the materials and testing details builders look for in a hard-use AR-15 BCG.

The full hard chrome finish provides exceptional corrosion resistance and durability, with a bright, chrome-like appearance that's easy to clean. Unlike coatings that sit on the surface, hard chrome becomes part of the metal through an electroplating process, resulting in extreme wear resistance and a self-lubricating surface. The corrosion-resistant properties make this BCG ideal for use in harsh maritime, desert, or jungle environments where lesser finishes would fail.

Built from mil-spec dimensioned components with domestically sourced 8620 steel carriers and Carpenter 158 steel bolts, each Microbest BCG undergoes strict quality control including high pressure testing (HPT) and magnetic particle inspection (MPI) on shot-peened bolts. The gas key is properly staked per mil-spec requirements. For shooters who want the closest thing to actual military-issue quality, Microbest delivers proven contract-grade reliability at a competitive mid-tier price point.