Description

The CMMG Banshee MK4 is an AR-style pistol platform built around the .338 ARC cartridge with a compact 10.5-inch barrel. It pairs Mk4 ZEROED components with an EML9 handguard and a RipBrace pistol brace to deliver a compact configuration suited to short-barrel, high-energy shooting. The design supports both suppressed and unsuppressed use and provides full-length M-LOK slots for accessory mounting.

Key Specifications

• The caliber is .338 ARC.
• The platform is Mk4.
• The barrel length is 10.50 inches.
• The barrel is 4140CM with a Nitride finish.
• The barrel twist rate is 1:8.
• The muzzle device is a CMMG ZEROED Linear Compensator with thread pitch 5/8 x 24.
• The upper receiver is Mk4 billet 6061 T6 aluminum.
• The lower receiver is Mk4 forged 7075 T6 aluminum.
• The handguard is an EML9 with full-length M-LOK slots.
• The stock/brace is a CMMG RipBrace and the finish is Cerakote.

The Banshee MK4 combines CMMG ZEROED controls and ambidextrous ergonomics with a compact AR-style layout to deliver a maneuverable package for users who require the larger-ballistics performance of .338 ARC in a short-barrel format. Durable aluminum receivers, an M-LOK-capable handguard and the RipBrace make it practical for modular setups and accessory fitment.