CMMG BANSHEE MK4 338ARC 10.5 338ARC caliber in compact platform Pistol

The CMMG BANSHEE MK4 chambered in .338 ARC with a 10.5-inch barrel represents a purpose-built platform for shooters demanding flat trajectories and controlled energy transfer in a compact profile. This AR-style pistol delivers the ballistic advantages of the .338 ARC cartridge—a modern intermediate round engineered for extended effective range—without sacrificing maneuverability in confined spaces or vehicle-based scenarios. At 9.6 lbs, the BANSHEE MK4 remains controllable during sustained fire while maintaining the structural rigidity required for precision work.

The 10.5-inch barrel length optimizes muzzle velocity for .338 ARC ammunition while keeping overall dimensions practical for close-quarters deployment. The full-length handguard features comprehensive M-LOK attachment slots on the sides, bottom, and between top Picatinny rail sections, enabling rapid mounting of lights, force multipliers, and accessories without rail congestion. This modularity supports both suppressed and unsuppressed configurations, critical for shooters who require flexibility across different operational contexts. The black armor finish provides baseline corrosion resistance for field environments.

The BANSHEE MK4 in .338 ARC appeals to precision-oriented shooters, home-defense planners, and tactical practitioners who prioritize ballistic efficiency over capacity. The .338 ARC's inherent accuracy and terminal performance characteristics make it a practical choice for those moving beyond conventional pistol-caliber platforms. Its compact barrel and handguard design accommodate tactical setups where specialized tools or extensive training leverage modern intermediate-cartridge performance. This platform bridges capability gaps between traditional pistols and full-size rifles in weight-conscious loadouts.