CMMG Resolute MK4 .350 Legend Upper with 16.1" Barrel, Black
$799.99 at OpticsPlanet · 6 stores
In stock Sale
CMMG Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Armor Black
No ratings yetBest price
$1,299.00at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- CMMG Resolute MK4 .350 Legend Upper with 16.1" Barrel, Black $799.99at OpticsPlanet
- APF Armory 350 Legend Fury Complete Upper Receiver Armor Black $749.00at OpticsPlanet
- Faxon Firearms Duty Series AR-15 350 Legend 16in Upper Receiver… $679.00at MidwayUSA
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $1,299.00Salechecked 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.
APF Armory 350 Legend Fury Complete Upper Receiver Armor Black
$749.00 at OpticsPlanet
In stock
Faxon Firearms Duty Series AR-15 350 Legend 16in Upper Receiver Gunner Carbine Length 1-16 Twist 1/2x28 w/BCG Black
$679.00 at MidwayUSA · 2 stores
In stock
Price history
Dashed line = out of stock. Tracking since Oct 13, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $1,299.00 | $1,299.00 | $1,299.00 |
Since Oct 13, 2026.
About this part
The CMMG Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Armor Black is a 16.1" .350 Legend upper receiver from CMMG. One store lists it, OpticsPlanet at $1,299.00.
Fits and works with
- Caliber
- .350 Legend · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 16.1" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Black
- Platform
- AR-15
- Caliber
- .350 Legend
From the manufacturer
CMMG Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Armor Black. Utilizing our patent pending direct impingement Compact Action DISSENT upper groups house the entire action and recoil assembly in the upper receiver resulting in less bulk and length than traditional AR pistols. The forward non-reciprocating side charger allows for quick bolt operation without coming off target. Direct impingement DISSENTS come equipped with a left side charger standard. Right side charging handles for DI models are available here. All DISSENT Upper groups include a 1913 Picatinny rail end plate to use in place of the lower receiver buffer tube. Specifications for CMMG Dissent Mk4 .350 Legend 16.1in Upper Group: Manufacturer: CMMG Caliber: .350 Legend Overall Length: 25.5 in Barrel Length: 16.1 in Barrel Twist Rate: 1-16 Firearms Threads Per Inch: 1/2x28 Muzzle Device: CMMG Zeroed Muzzle Brake Finish: Cerakote Fabric/Material: Aluminum Gun Type: Rifle Gun Make: CMMG Gun Model: CMMG Mk4 Gas System Type: Direct Impingement Magazine Included: No Package Contents: CMMG Dissent Mk4 .350 Legend 16.1in Upper Group What firearm models does the manufacturer say CMMG Dissent Mk4 .350 Legend 16.1in Upper Group is compatible with? The manufacturer says that CMMG Dissent Mk4 .350 Legend 16.1in Upper Group is compatible with CMMG Mk4CMMG 35B1AOC-AB: Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Armor Black
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