Microbest M16 Oilslick PVD/Chrome Bolt Carrier Group – MPI , HPT , OCKS, Sprinco | C158

Microbest Chrome AR-15 Bolt Carrier Group – Oilslick PVD Coated | C158 MPI/HPT Bolt

Premium Performance. Exclusive Finish.

Stand out without compromising reliability. This Microbest Chrome AR-15 Bolt Carrier Group features our exclusive Oilslick PVD coating, delivering the eye-catching rainbow finish enthusiasts love while retaining the proven durability and smooth operation of a full chrome bolt carrier group.

Manufactured by Microbest, one of the industry’s most respected OEM manufacturers, this complete BCG is built to true mil-spec standards using premium materials and individually tested components. The carrier is fully chrome lined inside and out before receiving our proprietary Oilslick PVD finish, providing exceptional lubricity, corrosion resistance, and easy cleaning.

Unlike many budget bolt carrier groups, this premium Microbest BCG includes OCKS® gas key screws, Sprinco® extractor and ejector springs, and a Carpenter 158 bolt that is individually High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) for dependable performance.

Whether you’re building a competition rifle, duty-style AR-15, or simply want one of the smoothest-running bolt carrier groups available, this BCG combines proven engineering with a finish that sets your rifle apart.

Features

• Manufactured by Microbest
• Exclusive Oilslick (Rainbow) PVD coating
• Full chrome carrier and bolt
• Mil-Spec M16 full-auto profile carrier
• Carpenter 158 steel bolt
• Individually High Pressure Tested (HPT)
• Individually Magnetic Particle Inspected (MPI)
• Shot peened bolt for increased durability
• OCKS® gas key screws
• Properly staked gas key
• Sprinco® extractor spring
• Sprinco® ejector spring
• Black Sprinco extractor insert
• Phosphate extractor
• Chrome cam pin
• Complete bolt carrier group, ready to install

Specifications

Carrier

• 8620 steel
• Full M16 auto profile
• Hard chrome inside and out
• Proprietary Oilslick PVD coating

Bolt

• Carpenter 158 steel
• Full chrome finish
• Shot peened
• HPT tested
• MPI inspected

Extractor

• 4140 steel
• Phosphate finish
• Sprinco extractor spring
• Black extractor insert

Gas Key

• 4130 steel
• Full chrome with Oilslick PVD coating
• Grade 8 hardware
• OCKS gas key screws
• Properly staked

Additional Components

• 4140 chrome cam pin
• Firing pin
• Firing pin retaining pin

Weight: 11.6 oz

Why Choose a Microbest Bolt Carrier Group?

The bolt carrier group is the heart of every AR-15. This premium Microbest BCG combines proven mil-spec materials with upgraded components that serious shooters appreciate. Individually tested Carpenter 158 bolts, OCKS gas key screws, Sprinco springs, and precision manufacturing provide the reliability expected from one of the most respected names in the AR-15 industry.

The exclusive Oilslick PVD finish adds outstanding wear and corrosion resistance while giving your rifle a distinctive look unlike traditional phosphate or nitride bolt carrier groups.

Whether you’re upgrading an existing rifle or completing a new AR-15 build, this complete Microbest Chrome Oilslick PVD Bolt Carrier Group delivers premium performance, premium materials, and premium style.