Rosco Manufacturing ROS-BCG-001 Bolt Carrier Group 5.56/300 BLK Black Melonite Stainless Steel

These 5.56/300 BLK Bolt Carrier Groups are Melonited, Full-Auto rated, are properly staked, and the bolts are Matched to the barrel. The Rosco Melonited Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements.