Mk4 Banshee Upper Receiver Group, 5.56 NATO, 12.5", Armor Black
$849.99 at OpticsPlanet
In stock Sale
CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black
No ratings yetBest price
$849.99at OpticsPlanet
In stock Sale checked Oct 15, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $849.99Salechecked Oct 15, 2026 | In stock | Buy at OpticsPlanet | |
| MidwayUSA | $849.99checked Oct 15, 2026 | In stock | Buy at MidwayUSA |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $849.99 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| MidwayUSA | $849.99 | $849.99 | $849.99 |
| OpticsPlanet | $849.99 | $849.99 | $849.99 |
Since Oct 12, 2026.
About this part
The CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black is a 16.1" 5.56 / .223 upper receiver from CMMG. It's sold by 2 stores, all at $849.99. The lowest in-stock price in the last 30 days was $849.99 at MidwayUSA.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 16.1" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper Receiver Group: Manufacturer: CMMG Barrel Length: 16.1 in Muzzle Device: CMMG Zeroed Muzzle Brake Color: Armor Black Fabric/Material: Billet 6061 T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Type: Rifle Gun Make: CMMG Gun Model: CMMG Mk4 Magazine Included: No Condition: New Package Contents: CMMG Mk4 Resolute Upper Receiver Group What firearm models does the manufacturer say CMMG Mk4 Resolute Upper Receiver Group is compatible with? The manufacturer suggests that CMMG Mk4 Resolute Upper Receiver Group is compatible with CMMG Mk4CMMG 55BC7C3-AB: Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black
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