Elevate your firearm's performance with the Rise Armament 5.56 Nickel Boron Bolt Carrier Group. Expertly crafted from 4140 steel this bolt carrier group is designed for 223 Remington and 5.56 NATO calibers. The Nickel Boron finish not only enhances durability but also ensures smooth operation reducing friction and wear over time. Each piece is precision-manufactured and individually inspected guaranteeing top-notch reliability and consistency for high-stakes situations. Ideal for enthusiasts seeking a robust and efficient upgrade this bolt carrier group stands out for its meticulous engineering and exceptional performance.