Product Tag - .223/5.56 300 Blackout bolt carrier group

The Bolt Carrier Group or BCG of your .223/5.56 AR Rifle or Pistol is a very crucial part.  It is often referred to as the ‘heart’ of the AR-15.  The overall reliability of your weapon depends heavily on the Bolt Carrier Group.  Check out the wide range of calibers and different types in our Bolt Carrier Group section.