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CMMG BANSHEE MK4 | 4.6×30 | 8 in | 40rd
MSRP:$1,424.95
Your Price:$1,310.00
CMMG BANSHEE MK4 chambered in 4.6x30mm with an 8-inch barrel, CMMG 40-round magazine, Cerakote finish, and M-LOK handguard.
The CMMG BANSHEE MK4 is an AR-style pistol built around the 4.6x30mm cartridge, configured with an 8-inch barrel and a high-capacity 40-round magazine. It uses a direct-impingement operating system and a lightweight M-LOK handguard for modular accessory placement. For a practical optic under $1000, a 1x red dot such as the Vortex SPARC AR pairs well for fast target acquisition. Typical applications include PDW-style carry and dedicated range training or compact competition use.
Product Specifications
The caliber is 4.6x30mm.
The barrel length is 8 inches.
The operating system is Direct Impingement.
The barrel twist rate is 1:5.9.
The barrel material is 4140CM SBN.
The barrel contour is MT.
The muzzle device is a CMMG ZEROED Linear Compensator.
The muzzle thread is 1/2 x 28.
The gas block is FourSix Specific .750.
The upper receiver is Billet 6061 T6 Aluminum.
The lower receiver is Mk4 Forged 7075 T6 Aluminum.
The handguard is a CMMG EML7 M-LOK with full-length M-LOK slots where specified.
The finish is Cerakote.
The trigger is a ZEROED Drop-In.
The magazine is a 40-round CMMG magazine.
The UPC is 810144722597.
The BANSHEE MK4 presents a compact, modern AR-platform option for shooters seeking a high-capacity, low-profile pistol in an uncommon cartridge. Its billet upper, forged lower, and M-LOK handguard make it straightforward to accessorize for compact carry or dedicated range configurations while retaining a robust feature set. The combination of the ZEROED control components and a high-capacity magazine makes it well suited to sustained range sessions and PDW-style roles.
Owners commonly praise the platform’s high magazine capacity and its low felt recoil for the cartridge.
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