Radical Firearms 5.56/300 Blk Melonite AR-15 Bolt Carrier Group - Gen 2

ONE HORSE M16 Nitride Bolt Carrier Group 5.56/300 BLK

FRANKLIN ARMORY Bolt Carrier Group 5.56 x 45mm Black

JP Enterprises FMOS Full Mass Bolt Carrier Group .223 Remington, Black

JP Enterprises FMOS Enhanced High Pressure Bolt Carrier Group .308 Win, Black

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

DMA Inc. XTS AR-15 .223 / 5.56 Mil-Spec Bolt Carrier Group - Black Nitride

DMA Inc. XTS AR-15 .223 / 5.56 Anodized Bolt Carrier Group-Red