KAK Industry Bolt Carrier Group 5.56x45mm/.300 AAC Blackout, Black

Phosphate coating and chrome lining offer exceptional protection against wear and corrosion, making them a popular choice for those prioritizing reliability and longevity in their firearms. The phosphate coating provides a strong initial protective layer, while the chrome lining enhances durability and resistance to the stresses of repeated firing. M16 auto profile carrier machined from aircraft and bearing quality 8620 steel, properly heat-treated, precision ground and finished with a chrome-l