The bolt carrier group is the cornerstone of the AR-15, driving the essential functions of chambering, firing, extracting, and cycling rounds. Its performance under stress dictates the rifle’s reliability, making its selection a critical decision for shooters building or upgrading an AR-15, whether for recreational shooting, tactical operations, or competitive events. At Dirty Bird Guns … Continue reading AR-15 Bolt Carrier Groups: The Definitive Guide to Choosing the Perfect Component