Description
Item Description
Bryant Ridge Co. is pleased to present this awesome semi-automatic pistol today for a penny-start auction, this is the CMMG Banshee Mk4!
-According to the owner, this example remains in New-Old-Stock condition, and we see no evidence that says otherwise-
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SPECIFICATIONS:
Manufacturer: CMMG
Model: Banshee Mk4
Serial: BOD30287
Caliber: 4.6x30mm
Finish: Midnight Bronze Cerakote
Barrel Length: 8" Barrel with Compensator
Optics/Sights: None (Picatinny Rail)
Stock/Grips: Black Polymer Pistol Grip with CMMG EML7 M-LOK Handguard
Action: Semi-Automatic
Markings: Standard
Bryant Ridge's Analysis:
The CMMG Banshee MK4 chambered in 4.6x30mm is not just a firearm—it's a bold statement in modern personal defense. Compact, aggressive, and engineered for superior performance, this cutting-edge PDW packs serious firepower into a sleek, ultra-lightweight 4.3-pound platform. Built on the battle-proven Mk4 AR architecture, the Banshee features a precision 8-inch 4140CM barrel with a 1:5.9 twist rate and a rugged Salt Bath Nitride finish, delivering both long-lasting durability and pinpoint accuracy. Its MT-profile barrel is topped with a CMMG Zeroed linear compensator, expertly designed to drive blast forward, making it perfect for high-pressure, close-quarters scenarios. A micro-length gas system and Foursix-specific .750 gas block ensure buttery-smooth cycling, finely tuned to maximize the ballistic potential of the high-velocity 4.6x30mm cartridge. Every inch of this firearm screams innovation and purpose. The billet 6061-T6 upper and forged 7075-T6 lower receiver provide unmatched strength without sacrificing agility. At just 23.7 inches long, the Banshee MK4 excels in tight spaces and rapid maneuvers.
Model: Banshee Mk4
Serial: BOD30287
Caliber: 4.6x30mm
Finish: Midnight Bronze Cerakote
Barrel Length: 8" Barrel with Compensator
Optics/Sights: None (Picatinny Rail)
Stock/Grips: Black Polymer Pistol Grip with CMMG EML7 M-LOK Handguard
Action: Semi-Automatic
Markings: Standard
Bryant Ridge's Analysis:
The CMMG Banshee MK4 chambered in 4.6x30mm is not just a firearm—it's a bold statement in modern personal defense. Compact, aggressive, and engineered for superior performance, this cutting-edge PDW packs serious firepower into a sleek, ultra-lightweight 4.3-pound platform. Built on the battle-proven Mk4 AR architecture, the Banshee features a precision 8-inch 4140CM barrel with a 1:5.9 twist rate and a rugged Salt Bath Nitride finish, delivering both long-lasting durability and pinpoint accuracy. Its MT-profile barrel is topped with a CMMG Zeroed linear compensator, expertly designed to drive blast forward, making it perfect for high-pressure, close-quarters scenarios. A micro-length gas system and Foursix-specific .750 gas block ensure buttery-smooth cycling, finely tuned to maximize the ballistic potential of the high-velocity 4.6x30mm cartridge. Every inch of this firearm screams innovation and purpose. The billet 6061-T6 upper and forged 7075-T6 lower receiver provide unmatched strength without sacrificing agility. At just 23.7 inches long, the Banshee MK4 excels in tight spaces and rapid maneuvers.
Its sleek EML7 M-LOK handguard offers expansive real estate for lights, lasers, and grips—plus M-LOK slots between Picatinny rail segments for next-level customization. Outfitted with the full CMMG Zeroed suite, including an ambi charging handle, drop-in single-stage trigger, ergonomic pistol grip, and 60/90-degree safety selector, this firearm is ready the moment you are. Feeding from a rugged 40-round CMMG magazine, the Banshee MK4 is the first AR-style platform ever chambered in 4.6x30mm—and the first to bring this elite cartridge to the U.S. civilian market.
Originally developed for the iconic H&K MP7, the 4.6x30mm round is a speed demon: flat-shooting, low-recoil, and armor-defeating. Even better, it’s more affordable and accessible than its 5.7x28mm rival, giving you more rounds downrange for less. Finished in a striking Midnight Bronze Cerakote, the Banshee MK4 doesn’t just perform—it turns heads. Whether you're running drills at the range, defending your home, or outfitting for duty use, the Banshee MK4 FourSix is the future of the PDW, in your hands today.
Contents:
Contents:
This example will ship with the matching factory-labeled box, one 40-round magazine, and all other contents pictured above!
Return Policy:
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Return Policy:
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Shipping Details
Handgun Standard Shipping with Insurance $50.00
Long Gun Standard Shipping with Insurance $70.00
Any orders placed with magazines that are not compliant with your state, county, or city regulations will not ship with your order.
We strive to ship orders within the close of the following business day after payment and documentation is received.
Payment Details
We accept all forms of Payment including Personal Check, Business Check, PO Money Orders, Certified Check, Etc.
Please note we place a 7 business day hold on shipment, for all non-certified payments.
Payment MUST be received within 14 days.
Return Policy
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Additional Details
Our #1 priority is customer satisfaction. We want to build a lasting trust in the relationship with our customers, so that you will always look to us for all your firearms needs. If you have any issues with your transactions please contact us, and we will work with you to resolve any issues you may have. We greatly appreciate your trust in us and we look forward to fulfilling all your future firearm needs.
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About Us
From a small town hobby, to a leader in the investment and collector grade firearms industry. Bryant Ridge Firearms is here to offer the best in quality and customer service when you are looking to unload your collector grade firearm collection.
