CMMG Resolute MK4 6mm ARC Upper with 16.1" Barrel, Black
$799.99 at OpticsPlanet · 4 stores
In stock Sale
CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Charcoal Green
No ratings yetBest price
$829.99at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- CMMG Resolute MK4 6mm ARC Upper with 16.1" Barrel, Black $799.99at OpticsPlanet
- Faxon Firearms Match Series AR-15 6mm ARC 12.5in Upper Receiver… $805.00at MidwayUSA
- Faxon Firearms Match Series AR-15 6mm ARC 16in Upper Receiver G… $805.00at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $829.99Salechecked Oct 22, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $829.99 | $829.99 | $829.99 |
Since Oct 14, 2026.
About this part
The CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Charcoal Green is a 16.1" 6mm ARC upper receiver from CMMG. One store lists it, OpticsPlanet at $829.99.
Fits and works with
- Caliber
- 6mm ARC · Shop matching ammo
- Bolt
- 6.5 Grendel / 6mm ARC · Bolt carrier groups
- Barrel length
- 16.1" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Green
- Platform
- AR-15
- Caliber
- 6mm ARC
From the manufacturer
CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Charcoal Green. Harness the capability of 6mm in this uniquely designed RESOLUTE 16.1 upper. Specifications for CMMG Mk4 6mm ARC Resolute Upper Group Receiver: Manufacturer: CMMG Caliber: 6mm ARC Overall Length: 16.5 in Barrel Profile: Medium Tapered Gas System Length: Pistol Length Barrel Twist Rate: 1-7.5 Muzzle Device: CMMG Zeroed Muzzle Brake Fabric/Material: 7075 T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Type: Rifle Gun Make: CMMG Gun Model: CMMG Mk4 Weight: 3.9 lb Magazine Included: No Mount Type: M-LOK Package Contents: CMMG Mk4 6mm ARC Resolute Upper Group Receiver What firearm models does the manufacturer say CMMG Mk4 6mm ARC Resolute Upper Group Receiver is compatible with? The manufacturer suggests that CMMG Mk4 6mm ARC Resolute Upper Group Receiver is compatible with CMMG Mk4CMMG 60B1091-CG: Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Charcoal Green
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