Microbest Hard Chrome BCG
Full hard chrome BCG from the same factory that supplies military contracts. Extremely durable finish.
- Price
- $155
- Brand
- Microbest
- Category
- Bolt Carrier Groups
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Features
- •Full hard chrome finish
- •MPI and HPT tested
- •Properly staked gas key
- •Carpenter 158 bolt
Price History
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Overview
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.
Key Features
- Full hard chrome electroplated finish
- M16-cut 8620 carrier
- Carpenter 158 steel bolt with shot peening
- Domestically sourced 8620 steel carrier
- Individual HP testing and MPI inspection
- Exceptional corrosion resistance for harsh environments
- Properly staked gas key with mil-spec procedures
Pros
- +High-spec OEM quality for the civilian market
- +Exceptional corrosion resistance in all environments
- +Hard chrome finish is extremely durable and long-lasting
- +Easy to clean with self-lubricating properties
- +Strong materials and testing details for the price
- +Made in USA with lifetime warranty support
Cons
- −Bright chrome finish shows wear patterns more visibly
- −Not as low-friction as modern DLC or NP3 coatings
- −Mid-tier pricing despite contract quality
- −Chrome can show cosmetic scratches over time
Detailed Specifications
- boltMaterial
- Carpenter 158 steel, shot peened
- carrierMaterial
- 8620 steel, domestically sourced
- coating
- Full hard chrome electroplate
- carrierInterior
- Hard chrome
- gasKey
- Properly staked per mil-spec
- mpiTested
- Yes - per military standards
- hptTested
- Yes - per military standards
- weight
- 15 oz listed weight
- profile
- M16 full-auto
- Finish
- Bright chrome
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