Brownells M16 Bolt Carrier Group 5.56 NATO MPI Inspected Chrome

The Brownells M16 Bolt Carrier Group is a full-mass M16-profile BCG chambered in 5.56 NATO, featuring a chrome-lined interior for enhanced corrosion resistance and durability. Each unit undergoes Magnetic Particle Inspection (MPI) to ensure structural integrity and reliability. The carrier features a smooth, non-serrated exterior finish. Compatible with AR-15 and M16-pattern rifles chambered in 5.56 NATO/.223 Remington.