CMMG Banshee MK4 Upper Group 300 Blackout 8" - 30B81F4AB

This is an AR-15 upper receiver group chambered in 300 Blackout with an 8" barrel, designed for compact configurations and optimized for both subsonic suppressed and supersonic applications. The upper group is compatible with standard AR-15 lower receivers and features the Banshee platform styling. Installation requires standard AR-15 upper receiver assembly procedures.