CMMG ENDEAVOR MK4 22 ARC 20″ 10RD | 28A7F0CAB

The CMMG ENDEAVOR MK4 in .22 ARC is built on CMMG’s Mk4 AR platform to deliver long-range .22 ARC performance in a modern sporting rifle form factor. It ships in Cerakote Armor Black with a Magpul MOE rifle stock, CMMG EML15 M-LOK handguard, ZEROED single-stage trigger and ambidextrous controls. For optics, consider a Vortex Viper PST Gen II 1-6×24 as a capable option under $1,000 that balances fast target acquisition with precision capability. Typical applications for this rifle include precision target shooting and varmint hunting.

Product Specifications

• The UPC is 810148627119.
• The manufacturer is CMMG.
• The model is listed as ENDEAVOR MK4 22 ARC.
• The manufacturer’s part number is 28A7F0CAB.
• The caliber is .22 ARC.
• The action is Semi-Auto.
• The magazine capacity is 10 rounds.
• The rate of twist is 1:7″.
• The handguard is a CMMG EML15 M-LOK.
• The muzzle threading is 1/2 x 28.
• The muzzle device is a CMMG ZEROED Muzzle Brake.
• The upper receiver material is Billet 6061 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• The stock is a Magpul MOE Rifle Stock.
• The finish is Cerakote Armor Black.
• The weight is 6.8 lbs.

The ENDEAVOR MK4 brings an AR-style ergonomics package and modular accessory mounting in a rifle tuned for .22 ARC ballistics. Its EML15 handguard and Picatinny sections provide room for optics and support gear while the ZEROED trigger and ambidextrous controls prioritize repeatable operation. This configuration makes the rifle suitable for disciplined target work and varmint field work where a lightweight, AR-platform option is desired.

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