PK Firearms Logo

Your home for AR-15 parts & accessories!

PK Firearms Logo

Micro-Best M-16 CHROME Bolt Carrier Group

$150.00
SKU: 
3148

The M-16 chrome bolt group assembly is machined from 8620 carbon steel, that is heat treated.  Exterior of carrier is chromed and interior is chrome-lined.  Uses a Mil-Spec gas key that is chromed on the exterior, chrome-lined on the interior, heat treated and secured to the carrier with Grade 8 fasteners that are properly staked.  The bolt assembly is machined from Carpenter No. 158® steel, shot-peened, High Pressure and MP tested, and has a tool steel extractor that is machined from bar stock and is chromed on the exterior. These Bolt groups are manufactured by Micro-Best, the oldest and largest OEM supplier of Mil-Spec BCG for many of the Govt. contracts.