The 7.62x39mm cartridge, designed for Soviet rifles like the AK-47, is valued in AR-15 platforms for its affordability and performance at close to medium ranges. However, adapting this cartridge to the AR-15 poses significant challenges for the BCG, which handles locking, unlocking, extracting, ejecting, and chambering rounds. Manufacturing a reliable 7.62x39mm bolt carrier group requires … Continue reading 7.62x39mm AR-15 Bolt Carrier Groups