CMMG Resolute Mk3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote Armor Black
$905.99 at Ammunition Depot · 3 stores
In stock
CMMG Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Coyote Tan
No ratings yetBest price
$909.99at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- CMMG Resolute Mk3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twi… $905.99at Ammunition Depot
- CMMG Banshee Mk3 8.6 Blackout 12.5 inch Upper Receiver Armor Bl… $929.99at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $909.99Salechecked 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.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
CMMG Banshee Mk3 8.6 Blackout 12.5 inch Upper Receiver Armor Black
$929.99 at OpticsPlanet
In stock Sale
Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $909.99 | $909.99 | $909.99 |
Since Oct 14, 2026.
About this part
The CMMG Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Coyote Tan is a 16.1" AR-15 upper receiver from CMMG. One store lists it, OpticsPlanet at $909.99.
Fits and works with
- Barrel length
- 16.1" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Coyote Tan
- Platform
- AR-15
From the manufacturer
CMMG Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Coyote Tan. 7x28mm have become a big thing in the last few years and if youre looking for PDW ballistics and the classic style and balance of a carbine then youre in luck. Combine this RESOLUTE Upper Group with either our Mk57 Lower or a standard AR15 lower group and CMMGs 5.7 AR Conversion Magazines and youll be ready to hit the range Specifications for CMMG Mk4 5.7X28mm Resolute Upper Group Receiver: Manufacturer: CMMG Caliber: 5.7x28mm Overall Length: 25.3 in Barrel Length: 16.1 in Barrel Profile: Medium Tapered Barrel Twist Rate: 1-9 Muzzle Device: CMMG Zeroed Muzzle Brake Fabric/Material: 6061-T6 Aluminum Gun Rail: M-LOK Gun Make: CMMG Gun Model: CMMG Mk4 Weight: 4 lb Magazine Included: No Mount Type: M-LOK Package Contents: CMMG Mk4 5.7X28mm Resolute Upper Group Receiver What firearm models does the manufacturer say CMMG Mk4 5.7X28mm Resolute Upper Group Receiver is compatible with? The manufacturer suggests that CMMG Mk4 5.7X28mm Resolute Upper Group Receiver is compatible with CMMG Mk4CMMG 57B40E4-CT: Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Coyote Tan
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