The CMMG Banshee Mk4 pistol in .338 ARC with a 10.5-inch barrel and armor black finish (brand part no. 34A390FAB) chambers a cartridge built for excellent stopping power and energy transfer on target, equally suited to suppressed and unsuppressed shooting. CMMG equips the pistol with Mk4 Zeroed parts and accessories, and full-length M-LOK slots run both sides and the bottom of the handguard, with additional M-LOK sections between the top Picatinny rail. An ambidextrous safety and optics-ready slide round out the package. Among .338 ARC semi-auto handguns, this Banshee Mk4 configuration favors shooters who want a hard-hitting cartridge in a compact AR-pattern pistol.

Key Specifications

• The chambering is .338 ARC, delivering strong stopping power and energy transfer.
• The barrel measures 10.5 inches.
• The handguard runs full-length M-LOK slots on both sides and the bottom.
• The controls are Mk4 Zeroed parts and accessories.
• The safety is ambidextrous.
• The slide is optics ready.
• The action is semi-automatic, cycling each round via the pistol’s own recoil.
• Shipping weight of approximately 9.505 pounds.
• The sights are Optics Ready.

Frequently Asked Questions

Is .338 ARC suited for suppressed shooting? Yes, it’s a great choice for both suppressed and unsuppressed shooting.

What magazine ships with this pistol? A 30-round magazine is included.

Buy the CMMG Banshee Mk4 Pistol, .338 ARC

Strong stopping power in a compact AR-pattern platform is exactly what this Banshee Mk4 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.