CMMG Resolute MK4 300 BLK 16″ Rifle, Armor Black, M-LOK,

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CMMG 30BC40AAB Resolute MK4 300 Blackout 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

Top off your next build with this RESOLUTE Mk4 Upper Group. Chambered, this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice.

$460.99

7 in stock

Purchase & earn 461 points!
**CMMG Resolute MK4 300 Blackout | 16.1" Barrel | Armor Black | M-LOK Handguard (No BCG or Charging Handle)**

Built for serious shooters who demand reliability, modularity, and style, the **CMMG 30BC40AAB Resolute MK4** in **300 Blackout** is purpose-built to elevate your AR game. Whether you're at the range, prepping for home defense, or dialing in a suppressor-friendly setup — this upper delivers.

🧱 **Key Features:**

- **Caliber:** 300 AAC Blackout – optimized for suppressed or subsonic performance  
- **Barrel:** 16.1" 4140CM steel, SBN-treated for long-lasting durability  
- **Finish:** Armor Black Cerakote – slick, tough, and built to take abuse  
- **Handguard:** Free-float **M-LOK** – ready for lights, grips, and mission-specific accessories  
- **Platform:** AR-15 compatible – drop this upper on your favorite lower  
- **Note:** Ships without BCG or charging handle – customize with your preferred components  

🎯 Why It Matters:

The Resolute MK4 is engineered with precision and tactical utility in mind. The **medium taper barrel** offers excellent accuracy while keeping the weight manageable. The **free-float M-LOK handguard** keeps your accessories locked in tight and your shots consistent. And with the 300 BLK chambering, this upper is ideal for running suppressed or working in close-quarters environments.

🧰 Ready to build your next go-to rifle? The **CMMG 30BC40AAB** gives you the flexibility to finish it your way – without compromising performance.

Dominate your next build. Add to cart now. 💥
UPC

810103473393

Manufacturer

CMMG

Manufacturer Part Number

30BC40AAB

Barrel Length

16.10"

Caliber/Gauge

.300 AAC Blackout

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