The CMMG ENDEAVOR MK4 is a semi-automatic modern sporting rifle chambered in .22 ARC, built on the Mk4 AR platform to combine AR ergonomics with the ballistics of the .22 ARC cartridge. The design emphasizes long-range performance and modularity while using AR‑style controls and accessories. Key components include a Magpul MOE rifle stock, CMMG ZEROED controls, and an EML15 M-LOK handguard to support a wide range of configurations.
Key Specifications
- Chambered in .22 ARC.
- Operates as a Semi-Automatic action.
- Equipped with a 10-round detachable magazine.
- Weighs 6.8 lbs.
- Barrel material is 4140CM SBN.
- Rate of twist is 1:7.
- Features a CMMG EML15 M-LOK handguard for accessory mounting.
- Includes a Magpul MOE rifle stock for familiar AR ergonomics.
- Finished in Cerakote Armor Black.
- Includes a ZEROED muzzle brake with 1/2-28″ muzzle threads.
This ENDEAVOR Mk4 blends purpose-built components and AR compatibility for shooters who prioritize accuracy, modularity, and reliable controls. With a robust parts set—ambidextrous ZEROED controls, drop-in ZEROED trigger, adjustable gas block, and broad M-LOK real estate—the rifle is ready for precision-oriented field use and configurable to meet a range of long-range and hunting needs.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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