The CMMG DISSENT MK4 .338 ARC AR Pistol is engineered for specialized applications demanding a compact footprint without compromising terminal performance. This platform integrates the potent .338 ARC cartridge with a proprietary bufferless operating system, optimizing the firearm’s overall length for discreet transport and efficient maneuverability.
Key Features
Proprietary DISSENT Operating System
The DISSENT series features an innovative compact piston operating system that eliminates the need for a traditional AR buffer tube. This design facilitates a compact, often folding, form factor while maintaining reliable cycling. The system is engineered to mitigate felt recoil and ensure consistent function across various ammunition types.
.338 ARC Caliber Integration
Chambered in .338 ARC, the DISSENT MK4 provides a significant increase in projectile energy and downrange effect compared to standard AR calibers. This cartridge is designed for enhanced ballistic efficiency from shorter barrels, offering effective engagement capabilities across diverse operational distances.
Precision Componentry
Constructed with high-grade materials, including billet 7075-T6 aluminum for the receivers and a 4140 chrome-moly steel barrel, each component is subject to precision machining. This ensures consistent fitment, reliable function, and robust durability under strenuous operational conditions. The M-LOK free-float handguard provides secure and versatile accessory integration.
Ergonomic and Modular Design
The firearm incorporates CMMG Zeroed™ components, including a pistol grip and a Linchpin™ ambidextrous charging handle, to enhance user interface and operational efficiency. The integrated Picatinny rail on the upper receiver accommodates a wide range of optical systems for varied mission requirements.
Technical Specifications
General
- Model: CMMG DISSENT MK4
- Caliber: .338 ARC
- Capacity: 10 Rounds
- Finish: Armor Black
Barrel
- Length: 6.5 inches
- Material: 4140 Chrome-Moly Steel
- Muzzle Device: CMMG ZEROED™ Linear Compensator
Receivers
- Material: Billet 7075-T6 Aluminum
- Receiver Type: Billet Upper & Lower
Operating System
- Type: Proprietary Compact Piston System, Bufferless Design
- Gas System: Optimized for short barrel operation
Furniture
- Handguard: M-LOK Free Float Handguard
- Charging Handle: CMMG Zeroed™ Linchpin™ Ambidextrous
- Pistol Grip: CMMG Zeroed™ Pistol Grip









