Microbest C158 HPT/MPI 5.56 Bolt Carrier Group – Chrome

Microbest C158 HPT/MPI 5.56 Bolt Carrier Group – Chrome

The Microbest Bolt Carrier Group is an excellent choice for any build. This drop-in AR-15 BCG features a corrosion-resistant hard chrome finish, MIL-SPEC dimensions, and a magnetic particle inspected Carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier features a gas key secured by properly staked Grade 8 screws and made in the U.S.A.

Features

• .233/5.56 NATO
• Hard chrome finish
• M16 cut
• Aircraft quality 8620 steel carrier
• 4130 steel gas key
• Properly staked grade 8 gas key screws
• Carpenter 158 steel bolt
• 4140 steel extractor
• MIL-SPEC O-ring
• MIL-SPEC gas rings
• 4140 steel cam pin
• 8740 steel firing pin with hard chrome finish
• Magnetic particle inspected
• Lifetime warranty
• Proudly made in the U.S.A.