The .223 / 5.56 / 300 Blackout bolt carrier group (BCG) is a cornerstone in the AR-15 platform, reflecting advancements in versatility and performance. Engineered to work seamlessly with multiple calibers, this BCG exemplifies adaptability, ensuring optimal firing and cycling. As a key component in one of the most popular firearms platforms, it’s a testament to the industry’s commitment to innovation and functionality.