Spikes Tactical Nickel Boron Ar-15 Bolt Carrier Group 223 Rem 5.56 NATO

The Spikes Tactical ST5BG03 Bolt Carrier Group is a nickel boron steel AR-15/M16 bolt carrier designed for 223 Remington and 5.56x45mm NATO chamberings, delivering reliable performance in a mission-ready BCG that pairs with standard rifle parts to maintain system integrity. Crafted in a silver nickel boron finish, this bolt carrier group combines low-friction characteristics with improved corrosion resistance, contributing to smoother cycling and easier maintenance over long-term use. As a purpo