CMMG Banshee MK4 Suppressed .300 Blackout 6.5" Upper Receiver Midnight Bronze 30B0EA9MB (UPC 840442510398)

The CMMG Banshee MK4 Suppressed .300 Blackout 6.5" Upper Receiver Midnight Bronze 30B0EA9MB (UPC 840442510398) is a premium, factory-optimized short-barreled upper designed for shooters who want exceptional suppressed performance in a compact and visually striking package. Chambered in .300 Blackout with a 6.5-inch barrel, this Banshee MK4 upper is specifically engineered for suppressor use and features CMMG’s distinctive Midnight Bronze finish. Whether you’re building a dedicated suppressed SBR, a compact home defense rifle, or a high-performance hunting upper, this model delivers reliable function with both subsonic and supersonic ammunition while offering a unique aesthetic that sets it apart from standard black uppers. CMMG has tuned the gas system and included the proper muzzle device to ensure smooth, consistent cycling when a suppressor is attached, making this one of the most complete factory-suppressed .300 BLK uppers available.

CMMG has built a strong reputation for producing high-quality, innovative AR components. The Banshee series is specifically designed for short-barreled applications, and this suppressed Midnight Bronze version combines performance, reliability, and distinctive styling in one complete upper assembly.

Factory Suppressed Optimization

This upper is purpose-built for suppressed shooting. CMMG has optimized the gas system and barrel profile specifically for use with a suppressor. The pistol-length gas system and included muzzle device work together to provide reliable cycling with both subsonic and supersonic .300 Blackout loads when a suppressor is mounted. This factory tuning helps reduce over-gassing issues commonly associated with suppressed short barrels, resulting in smoother operation, reduced recoil, and less gas blowback to the shooter.

Midnight Bronze Finish

This model stands out with its attractive Midnight Bronze finish on the handguard and select components. Midnight Bronze is a rich, dark bronze anodized color that offers a unique tactical appearance while maintaining excellent durability and corrosion resistance. This finish provides a distinctive look that differentiates it from standard black uppers and pairs well with a variety of rifle builds. The Midnight Bronze color is both functional and aesthetically pleasing, making this upper a popular choice for shooters who want their firearm to stand out while still maintaining a professional, low-profile appearance in the field.

.300 Blackout Performance in a Compact Package

The .300 Blackout cartridge is perfectly suited for short-barreled uppers like this 6.5-inch Banshee model. With subsonic ammunition and a suppressor, this upper delivers excellent terminal performance with minimal sound signature, making it ideal for home defense and tactical applications. When using supersonic loads, the upper provides impressive velocity and energy for hunting medium-sized game. The 1:7 twist rate stabilizes a wide range of bullet weights, giving shooters flexibility in ammunition selection for both suppressed and unsuppressed use.

Banshee MK4 Platform Advantages

The Banshee MK4 upper is built on CMMG’s proven Banshee platform, which is specifically engineered for short-barreled rifles. It features a lightweight yet durable forged 7075-T6 aluminum upper receiver paired with a high-quality 6.5-inch barrel. The included CMMG RML7 M-LOK handguard in Midnight Bronze provides ample rail space for accessories while keeping weight to a minimum. This results in a compact, well-balanced upper that is easy to maneuver in tight spaces.

Suppressor Ready Features

This upper is specifically engineered for suppressed use. The gas system has been optimized to function reliably with the increased back pressure created by a suppressor. The muzzle device is compatible with most popular suppressor mounting systems, allowing users to quickly attach and detach their suppressor as needed. This level of factory optimization helps ensure consistent reliability and reduces common issues associated with running short barrels suppressed.

Ideal Applications

• Suppressed home defense builds
• Short-barreled rifle (SBR) configurations
• Compact hunting rifles for medium game
• Tactical and professional use
• Shooters wanting a distinctive Midnight Bronze finish
• Low-signature shooting with subsonic ammunition

Why Choose the CMMG Banshee MK4 Suppressed Midnight Bronze Upper?

• Factory optimized for suppressor use
• Attractive Midnight Bronze finish
• Compact 6.5-inch .300 Blackout barrel
• Reliable function with subsonic and supersonic loads
• Lightweight Banshee MK4 platform
• M-LOK handguard for accessory mounting
• High-quality CMMG components and construction
• Ready to pair with your favorite suppressor

The CMMG Banshee MK4 Suppressed .300 Blackout 6.5" Upper Receiver Midnight Bronze 30B0EA9MB (UPC 840442510398) is a premium, factory-built upper designed for shooters who want a compact, suppressor-optimized .300 Blackout platform with distinctive styling. With its 6.5-inch barrel, suppressor-tuned gas system, and Midnight Bronze finish, this upper delivers outstanding performance and a unique appearance. The .300 Blackout cartridge excels in short barrels, providing excellent terminal ballistics with subsonic ammunition when suppressed. Whether you’re building a dedicated suppressed SBR for home defense, a compact hunting rifle, or a high-performance tactical upper with standout aesthetics, the CMMG Banshee MK4 Suppressed Midnight Bronze upper offers the reliability, accuracy, and suppressor compatibility that serious shooters demand. Built with quality components and engineered specifically for suppressed use, this upper eliminates the common issues associated with pairing short barrels and suppressors while adding a premium visual upgrade. Add the CMMG Banshee MK4 Suppressed .300 BLK Midnight Bronze upper to your next build and experience the performance of a purpose-built, factory-optimized suppressed upper receiver.

Build your suppressed .300 Blackout rifle with the CMMG Banshee MK4 Suppressed Midnight Bronze Upper.