Walker Defense Research Nickel Boron Bolt Carrier Group 5.56x45mm NATO/.300 AAC Blackout

Walker Defense Research Nickel Boron Bolt Carrier Group 5.56x45mm NATO/.300 AAC Blackout. The bright satin finish serves as a functional surface that provides smooth reliable operation while offering excellent wear resistance and notably easier cleaning. Each BCG undergoes rigorous small-batch quality control throughout production. Walker Defense Research hand-matches components conducts High Pressure Testing (HPT) and performs Magnetic Particle Inspection (MPI) of each bolt. The gas key feature