Matrix Arms AR-15 Bolt Carrier Group 5.56x45mm NATO Black

The Bolt Carrier Group (BCG) is the quintessential component in the rifle's assembly, which is responsible for loading rounds into the chamber, firing those rounds, extracting and ejecting the spent casings, and operating the hammer to repeat the firing process. This component is subject to extreme pressure and high temperatures, so choosing a BCG that's produced using the highest quality materials and innovative design is important in ensuring your AR-15 not only performs with precision in high