CMC Enhanced AR-15 Complete Bolt Carrier Group .223 Rem/5.56 NATO/.300 AAC Blackout Nitride Finish Black 81631

CMC Enhanced AR-15 Complete Bolt Carrier Group (Black) Specifications and Features:

• CMC 81631
• Enhanced AR-15 Complete Bolt Carrier Group
• .223 Remington / 5.56 NATO / .300 AAC Blackout Compatible
• Enlarged Forward Ports
• Optimized for Suppressor Use
• Hardened 4340 Cam Pin
• Mil-Spec 8740 Steel Firing Pin
• 9310 Case Hardened Steel Bolt (Shot Peened)
• Magnetic Particle Inspected (MPI)
• High Pressure Tested (HPT)
• Mil-Spec Extractor Spring
• Mil-Spec O-Ring
• Nitride Finish
• Matte Black

Fits:

• Mil-Spec Compatible AR-15 Upper Receiver’s chambered in .223 Remington, 5.56 NATO, or .300 AAC Blackout