Description
Microbest OEMs for many of the leading AR manufacturers, like FN, BCM, and Sons of Liberty. Get the same quality straight from the source without paying more for a roll mark name! Microbest is the industry standard for manufacturing to exact specs and standards.
Microbest BCGs meet or exceed Milspec standards, are M16 cut, chrome lined, come with upgraded Spingco 5 coil extractor springs. Bolts are Carpenter 158 steel and individually magnetic particle inspected, high pleasure tested and shot peened. Gas key is properly staked with grade 8 hardware.
- Mil spec M16 cut carrier, 8620 steel
- Bolt made from Carpenter 158 steel
- Individually magnetic partial inspected
- Shot peened
- High pressure tested
- Cam pin, 4340 steel
- Chromed firing pin, 8620 steel
- Springco 5 coil extractor spring
- Gas key, 4140 steel
- Grade 8 hardware
- Properly steaked
*For your safety, it is recommended to check proper headspace when pairing a bolt and barrel
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