CMMG Banshee MK3 8.6 Blackout 12.5″ 20RD

The CMMG Banshee MK3 in 8.6 Blackout is built for those who demand serious power in a compact, highly adaptable platform. Engineered on the rugged Mk3 platform, this tactical firearm delivers hard-hitting performance, modern ergonomics, and premium components—making it an outstanding choice for defensive applications, range training, and advanced shooting setups.

With its 12.5-inch barrel and innovative 8.6 Blackout chambering, the Banshee MK3 is designed to maximize energy and efficiency in a shorter platform. Combined with CMMG’s precision manufacturing and high-quality materials, this firearm offers a balanced blend of durability, control, and performance.

---

Benefits

• Compact Power with Serious Impact – The 8.6 Blackout caliber paired with a 12.5″ barrel delivers impressive energy in a maneuverable platform, ideal for tight environments and versatile use.

• Enhanced Control and Faster Follow-Up Shots – The ZEROED Linear Compensator helps reduce recoil and muzzle movement, allowing for quicker target reacquisition and improved shooting confidence.

• Built for Long-Term Reliability – Premium materials like 4140CM steel and billet 7075 T6 aluminum ensure durability and consistent performance over time.

---

Features

• 12.5″ 4140CM Nitride Barrel (1:3 Twist) – Optimized for the 8.6 Blackout round, delivering accuracy, durability, and ballistic efficiency.

• Direct Impingement Operating System – Proven system for smooth cycling and dependable performance.

• CMMG EML11 M-LOK Handguard – Provides flexibility for mounting lights, grips, and other essential accessories.

---

Performance-Driven Design

This Banshee MK3 is equipped with a billet 7075 T6 aluminum upper and lower receiver, offering superior strength without unnecessary weight. The Cerakote finish adds an extra layer of protection against wear and corrosion while maintaining a sleek, tactical appearance.

The adjustable gas block allows fine-tuning of the rifle’s performance, especially when running different loads or suppressed setups. Paired with the CMMG ZEROED drop-in single-stage trigger, this firearm delivers a crisp, consistent break that enhances accuracy and control.

Ergonomics are dialed in with the CMMG RipBrace, providing stability and comfort, while the ambidextrous charging handle and controls make operation smooth and intuitive from either side.

---

Built for Versatility

The integrated M-LOK handguard and Picatinny-ready platform allow for easy customization with optics, lights, and other accessories. Whether setting up for defensive readiness or range performance, this firearm adapts to meet the need.

The included Magpul 20-round PMAG ensures reliable feeding and durability, backed by one of the most trusted names in firearm accessories.

---

CMMG Banshee MK3 Specifications

• Manufacturer: CMMG

• Model: Banshee MK3

• Platform: Mk3

• Caliber: 8.6 Blackout

• Operating System: Direct Impingement

• Barrel Length: 12.5″

• Barrel Material: 4140CM Steel, Nitride Finish

• Twist Rate: 1:3

• Muzzle Device: CMMG ZEROED Linear Compensator

• Thread Pattern: 5/8×24

• Gas System: Pistol-Length with Adjustable Gas Block

• Upper/Lower Receiver: Billet 7075 T6 Aluminum

• Handguard: CMMG EML11 M-LOK

• Trigger: ZEROED Drop-In Single Stage

• Charging Handle: Ambidextrous

• Stock/Brace: CMMG RipBrace

• Capacity: 20 Rounds

• Magazine: Magpul PMAG (20rd)

• Weight: 7.4 lbs

• Overall Length: 29.5″

• Finish: Cerakote