CMMG Endeavor Mk4 22 ARC 20″ Armor Black

About this product

The CMMG Endeavor Mk4 is a semi-automatic AR-platform rifle built for precise, controlled shooting and modular customization. Chambered for 22 ARC and fitted with a 20-inch threaded barrel, it accepts AR-compatible components and is set up for a range of field and target applications. The platform includes ambidextrous controls, a Magpul MOE stock and an EML15 M-LOK handguard for accessory mounting. Built features such as a zeroed single-stage trigger and a factory muzzle brake aim to provide consistent, user-friendly operation.

Key Specifications

• The rifle is chambered in 22 ARC for modern small-caliber performance.
• The barrel measures 20 inches and is threaded for muzzle devices.
• The action is Semi-Automatic on an AR-type platform.
• The rifling twist rate is 1:7 for stabilization of appropriate projectiles.
• Barrel muzzle threads are 1/2-28 in. for common muzzle devices.
• The handguard is a CMMG EML15 M-LOK design for accessory mounting.
• The stock is a Magpul MOE (synthetic, black) for proven ergonomics.
• The trigger is a Zeroed drop-in single-stage for consistent engagement.
• Detachable magazine capability is listed as Yes for removable feeding options.
• The finish is specified as Cerakote Armor Black for a durable exterior coating.

This configuration emphasizes modularity and straightforward operation: the Mk4 platform accepts standard AR components, offers multiple mounting options via M-LOK and Picatinny, and includes ambidextrous controls to suit a wide range of users. Its combination of a 20-inch threaded barrel, proven furniture, and a single-stage trigger makes it a practical choice for precision-oriented shooting and adaptable field use.

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