CMMG Dissent 6.50" Upper .300 AAC Blackout with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Armor Black
$1,024.99 at GunMag Warehouse · 4 stores
In stock
CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Midnight Bronze
No ratings yetBest price
$1,299.00at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- CMMG Dissent 6.50" Upper .300 AAC Blackout with 1:7 Twist Rate … $1,024.99at GunMag Warehouse
- CMMG Dissent 10.50" Upper .300 AAC Blackout with 1:7 Twist Rate… $1,024.99at GunMag Warehouse
- Maxim Defense Industries MDX 508 U.R.G. AR-15 .300 AAC Blackout… $1,255.50at OpticsPlanet
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.
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CMMG Dissent 10.50" Upper .300 AAC Blackout with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Armor Black
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Maxim Defense Industries MDX 508 U.R.G. AR-15 .300 AAC Blackout 8.5 inch Upper Receiver Pistol Length 1-7 Twist 5/8x24 HATEBRAKE Black
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Maxim Defense Industries MDX 510 U.R.G. AR-15 .300 AAC Blackout 10.3 inch Upper Receiver Pistol Length 1-8 Twist 5/8x24 HATEBRAKE Black
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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 .300BLK 16.1in Empire Profile Upper Group Midnight Bronze is a 16.1" 300 Blackout upper receiver from CMMG. One store lists it, OpticsPlanet at $1,299.00.
Fits and works with
- Caliber
- 300 Blackout · 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
- Bronze
- Platform
- AR-15
- Caliber
- 300 Blackout
From the manufacturer
CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Midnight Bronze. This complete upper assembly features a 16.1" Empire Profile barrel with an unthreaded muzzle and recessed target crown. The medium-taper barrel design optimizes weight distribution while meeting specific state requirements. Built on CMMG's proven Mk4 platform this upper group is ready to perform. Specifications for CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group: Manufacturer: CMMG Caliber: .300 AAC Blackout Overall Length: 25 in Barrel Length: 16.1 in Barrel Profile: Bull Gas System Length: Mid Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: Non Threaded Handguard Type: M-LOK ATLAS S-ONE Muzzle Device: No Fabric/Material: Aluminum Handguard Length: 15 in Gun Rail: M-LOK Gun Make: CMMG Gun Model: CMMG Dissent MK4 Weight: 4 lb 3.9 lb Barrel Material: 4140 Chrome Moly Vanadium Magazine Included: No Features of CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Complete Mk4 DISSENT upper assembly 16.1" barrel in 300 Blackout Empire Profile medium-taper design Unthreaded muzzle with recessed target crown State-compliant configuration Ready to install on compatible lower receivers Package Contents: CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group What firearm models does the manufacturer say CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group is compatible with? The manufacturer says that CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group is compatible with CMMG Dissent MK4CMMG 30B540A-MB: Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Midnight Bronze
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