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

CMC Enhanced AR-15 Complete Bolt Carrier Group .223 Rem/5.56 NATO/.300 AAC Blackout Nitride Finish Black CMC Trigger is a Texas based company committed to providing you with high quality parts and accessories for the AR-15 platform. This particular item is an Enhanced Bolt Carrier Group designed for individuals who have high quality standards demanding the same from the components they install in their firearms. Specifically this enhanced carrier has fewer points of contact resulting in less surface area reducing friction. The bolt is made to a true mil-spec dimension and the external surfaces are CNC ground after heat treatment for a precise fit. You will notice that the bolts are held to very high standards including MPI and HPT testing. The bolt itself is made from 9310 case hardened steel with a black nitride finish. Additionally you will notice that the "Trumpet" area behind the gas rings, where carbon collects is precision CNC ground after heat treatment which keeps the area as smooth as possible and makes cleanup a breeze even after shooting suppressed. 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