The LaRue Bolt Carrier Group (BCG) is a durable and reliable component used in our rifles and complete uppers. It has been tried and tested worldwide and is utilized by military, law enforcement, and recreational shooters. When combined with a LaRue Barrel and LaRue MBT-2S Trigger, the performance benefits of this BCG are clear - we consistently see sub-moa accuracy. The BCG is machined with precise tolerances and features our exclusive LaRue Gas Seal which optimizes gas efficiency within the BCG. Its easy-to-clean finish simplifies maintenance, making it an ideal upgrade for your 5.56 AR.