For operators seeking a compact, high-energy pistol platform that blends AR familiarity with large-bore performance, the right balance of parts and cartridge choice matters. This review breaks down how a short-barrel, buffer-tube-operated design can deliver controllable recoil, modularity, and reliable suppressed/unsuppressed transitions for duty and defensive roles.

Platform overview

CMMG BANSHEE MK4 [AB] brings Cmmg’s mil-spec receiver set into a compact pistol package that accepts intermediate cartridges and keeps familiar AR ergonomics. The design uses traditional buffer tube operation, making it compatible with a wide variety of brace options and aftermarket parts. This model ships with a RIPBRACE pistol brace, Armor Black Cerakote finish, and one 10-round magazine—all packaged at a $1528.99 price point. Shop this product

Key features and hardware

Z-series compensator and handguard

The included Z-series linear compensator is tuned to direct gas forward and reduce concussion on the shooter while preserving a compact overall length. Paired with CMMG’s EML9-series MLOK hand-guard, the package allows low-profile optics and accessory placement without adding unnecessary bulk—important for close-quarters deployment.

Short barrel and brace setup

A 10.5-inch barrel offers a balance between maneuverability and ballistic performance. The RIPBRACE pistol brace integrates easily with the buffer tube operation, preserving the platform’s user familiarity while keeping legal configurations clear for pistol-class builds.

Caliber: .338 ARC — what it brings to the table

The 2025 chambering in Hornady’s .338 ARC is the defining point of this variant. .338 ARC aims to deliver greater on-target energy than .300 BLK while maintaining subsonic and supersonic versatility. Practically, that means better terminal performance at extended pistol ranges and less gas system tuning when swapping between suppressed and unsuppressed configurations—beneficial for operators who need a multi-role pistol solution. View product details and pricing

Handling, concealment, and mission fit

Ergonomics favor fast manipulation: mil-spec receivers, M-LOK modularity, and a short sight radius allow rapid transitions in tight environments. The Armor Black Cerakote finish adds corrosion resistance for field use, and the single 10-round magazine keeps the package compact for range or vehicle stowage.

The CMMG BANSHEE MK4 [AB] is a purpose-built compact pistol for those who want AR familiarity with increased terminal performance from .338 ARC. Check current availability on the shop page to confirm stock and to complete your purchase through the retailer. Check current availability

People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.