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Microbest manufactures bolt carrier groups for the U.S. military and small arms OEM manufacturers. Their focus is function over cosmetics—these aren't museum pieces. Every unit gets high pressure tested (HPT) and magnetic particle inspected (MPI) individually before shipping.
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01 // DETAILS
Full description and what we offer
Microbest manufactures bolt carrier groups for the U.S. military and small arms OEM manufacturers. Their focus is function over cosmetics—these aren't museum pieces. Every unit gets high pressure tested (HPT) and magnetic particle inspected (MPI) individually before shipping.
AR-15 / 5.56 BCGs in multiple finishes: - All-Chrome (standard mil-spec) - Nitride+ - Phosphate+ - DLC+ (Diamond-Like Carbon) - Premium variants with upgraded carrier key screws
AR-10 / 7.62 BCGs in the same finish options
Individual components: - Complete bolts (C158 steel, shot peened) - Carriers - Gas keys
Every bolt carrier group ships with: - C158 steel construction - Shot peening - High Pressure Test certification - Magnetic Particle Inspection - Mil-spec dimensions and tolerances
"These aren't designed to be pretty. They're not meant to compete with the gorgeous museum-quality $200+ units. They're meant to work."
Microbest offers "COSMO" variants at lower prices. These function 100% correctly but may have cosmetic imperfections—perfect if you care about reliability over appearance.
Standard all-chrome BCGs run $119–$135. Premium variants with upgraded components reach $140–$155. They also sell individual bolts ($70) and carrier components separately.
Phone: (888) 5-ARFTAC Location: San Antonio, TX Website: arftac.com