Walker Defense Research Dark Matter High-Polish DLC Bolt Carrier Group 5.56x45mm NATO/.300 AAC Blackout

Walker Defense Research Dark Matter High-Polish DLC Bolt Carrier Group 5.56x45mm NATO/.300 AAC Blackout. Understanding that a BCG is only as good as the metal beneath its coating each unit undergoes aggressive substrate polishing premium DLC coating application and final polishing resulting in superior friction reduction and enhanced cleaning characteristics. This BCG is specifically engineered for reliable performance in suppressed and high-round count applications. Walker Defense Research hand