First Impressions of CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver
The CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver isn’t just another AR upper; it’s a hybrid beast, merging the AR platform’s modularity with the AK-47’s hard-hitting 7.62x39mm cartridge. This unique combination has always piqued my interest, promising a blend of familiarity and raw power. It’s CMMG’s attempt to bridge the gap, and my initial impression is one of intrigued anticipation.
I was looking for a compact, hard-hitting upper receiver that could utilize readily available and affordable 7.62x39mm ammunition. The promise of AR ergonomics with AK ballistics was too tempting to ignore, especially for a dedicated hog hunter like myself. The CMMG Banshee Mk47 seemed like the perfect answer to my need for a short-barreled rifle (SBR) build without sacrificing terminal performance.
The upper arrived well-packaged, and my first impression was dominated by its robust feel. The Cerakote finish looked impeccable, and the 8-inch barrel gave it a distinctly aggressive stance. It felt solid, reassuringly heavy without being cumbersome.
Compared to other AR-15 uppers I’ve handled, the Banshee Mk47 felt noticeably beefier, a consequence of accommodating the larger 7.62x39mm round. I considered a standard AR-15 chambered in 5.56 or a dedicated AK pistol, but the CMMG offered a compelling middle ground: AR-15 aftermarket support and customization, along with the AK’s proven stopping power. It immediately sparked a sense of excitement, a feeling that this upper could potentially redefine my approach to close-quarters engagements.
Real-World Testing: Putting CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver to the Test
First Use Experience
My initial testing took place at my local shooting range, a familiar environment ideal for gauging basic functionality. I paired the CMMG Banshee Mk47 upper with a dedicated Mk47 lower receiver (required due to the proprietary magazine well) and a reliable trigger group. The first few magazines were dedicated to function testing, and I was pleased to experience zero malfunctions.
The range was dry and sunny, but I made sure to introduce some “adverse” conditions by deliberately letting the bolt carrier group (BCG) run dry after a few magazines. Even without lubrication, the Banshee Mk47 continued to cycle reliably, showcasing its robust design. The recoil was noticeably more substantial than a 5.56 AR, but manageable and predictable, a reassuring thud against my shoulder.
Extended Use & Reliability
After several months of consistent use, the CMMG Banshee Mk47 has proven to be a reliable and capable performer. I’ve put several hundred rounds through it, using a variety of 7.62x39mm ammunition from different manufacturers, including both steel-cased and brass-cased options. The upper has shown no signs of slowing down, maintaining its consistent accuracy and reliable cycling.
The Cerakote finish has held up remarkably well, showing only minor wear marks around the ejection port. Cleaning is relatively straightforward, as the AR-15 platform is familiar, and the gas system is easily accessible. Compared to my previous experiences with AK-pattern rifles, the Banshee Mk47 is significantly easier to disassemble and maintain.
Breaking Down the Features of CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver
Specifications
The CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver boasts some impressive specs that contribute to its unique performance. It features a 7.62x39mm caliber, providing significant stopping power in a compact package. The 8-inch barrel is crafted from 4140 Chrome Moly steel, offering a balance of durability and accuracy.
Weighing in at 3.9 lbs, it provides a substantial feel without being overly heavy. The upper receiver is constructed from 7075 T6 Aluminum, known for its strength and lightweight properties. A 1-10 twist rate stabilizes a wide range of 7.62x39mm bullet weights.
The pistol-length gas system ensures reliable cycling even with the short barrel. The included CMMG Zeroed Linear Compensator effectively directs muzzle blast forward, minimizing felt recoil and noise for the shooter. Finally, the M-LOK handguard offers ample space for mounting accessories.
Performance & Functionality
The CMMG Banshee Mk47 excels in delivering AR-15 ergonomics with AK-47 ballistics. Accuracy is surprisingly good for such a short barrel, easily achieving 2-3 MOA with quality ammunition. The pistol-length gas system is tuned perfectly, ensuring reliable cycling with a wide range of ammunition.
The main strength lies in its ability to deliver substantial stopping power in a compact and maneuverable package. One potential weakness is the proprietary magazine requirement; however, CMMG’s magazines are known for their reliability. It definitely meets expectations, offering a unique blend of AR-15 familiarity and AK-47 performance.
Design & Ergonomics
The Banshee Mk47 exhibits excellent build quality, with tight tolerances and a flawless Cerakote finish. Its weight provides a solid feel without being overly burdensome, and the M-LOK handguard offers a comfortable and secure grip. The controls are familiar to any AR-15 user, minimizing the learning curve.
The ergonomics are excellent, particularly for those accustomed to the AR-15 platform. The charging handle and safety selector are easily accessible, and the magazine release is intuitive to operate.
Durability & Maintenance
Given its robust construction and high-quality materials, the CMMG Banshee Mk47 is built to last. The Cerakote finish provides excellent corrosion resistance, and the 4140 Chrome Moly barrel is known for its durability. Maintenance is straightforward, requiring regular cleaning and lubrication of the BCG and gas system.
Disassembly is similar to a standard AR-15, making maintenance relatively simple. With proper care, this upper receiver should provide years of reliable service.
Accessories and Customization Options
The CMMG Banshee Mk47 is highly customizable, thanks to its compatibility with AR-15 accessories. The M-LOK handguard offers ample space for mounting optics, lights, lasers, and other accessories. The upper receiver is compatible with most AR-15 triggers, charging handles, and other internal components.
Popular accessories include red dot sights, holographic sights, and weapon lights. It’s also worth noting that due to the 5/8×24 thread pitch, a wide variety of muzzle devices can be used to further tune recoil and muzzle blast.
Pros and Cons of CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver
Pros
- Compact and Maneuverable: The 8-inch barrel makes it ideal for close-quarters engagements and vehicle use.
- 7.62x39mm Power: Delivers significant stopping power compared to 5.56 NATO.
- AR-15 Ergonomics: Familiar controls and modularity for easy customization.
- Reliable Cycling: Pistol-length gas system ensures consistent performance.
- Durable Construction: High-quality materials and Cerakote finish for longevity.
Cons
- Proprietary Magazine: Requires dedicated Mk47 magazines, limiting compatibility.
- Recoil: More pronounced than 5.56 NATO, which might not be suitable for everyone.
Who Should Buy CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver?
The CMMG Banshee Mk47 is perfect for hog hunters, home defense enthusiasts, and anyone seeking a compact, hard-hitting SBR-style firearm. It’s also a great option for those who appreciate the AR-15 platform but desire the increased terminal performance of the 7.62x39mm cartridge. This is a great choice for those wanting an AR platform utilizing AK magazines and ammunition.
Those primarily concerned with long-range accuracy or extremely lightweight builds should skip this product. Those highly sensitive to recoil might also find it less appealing. A quality optic, such as a red dot or holographic sight, is a must-have accessory for maximizing its potential.
Conclusion on CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver
The CMMG Banshee Mk47 7.62x39mm 8n Gen 2 Complete Upper Receiver is a unique and compelling option for those seeking a compact and powerful AR-15 variant. It successfully blends the AR platform’s ergonomics and modularity with the AK-47’s potent 7.62x39mm cartridge. The price is justified given the quality of materials, innovative design, and reliable performance.
I would personally recommend the Banshee Mk47 to anyone looking for a versatile and hard-hitting SBR-style upper receiver. If you’re ready to experience the best of both worlds, the CMMG Banshee Mk47 is waiting to be unleashed!