Glock G21 Gen 5 45 ACP, 4.61" Barrel, Flat Dark Earth Frame, Black Slide, MOS Cut, 10rd 
CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block
$2,315.05
Lightweight AR-15 in 6mm ARC with side charging, folding stock, and adjustable gas block. Ideal for long-range shooting and hunting without the weight of an AR-10.
The CMMG 60AA90CCT DISSENT MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan REC/15″ M-LOK Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block brings the reach of a larger cartridge into a lightweight AR-15 platform. If you want to shoot flat at distance without the extra pounds of an AR-10, this rifle is built for you. It uses 6mm ARC, a round that drops deer and targets with authority, but fits in a compact, easy-to-handle carbine.
| Manufacturer | CMMG |
|---|---|
| Model | DISSENT MK4 |
| Material | 7075-T6 Aluminum receiver, 4140 steel barrel (per manufacturer specs) |
| Compatibility | 6mm ARC ammunition; AR-15 lower parts |
| Finish | Coyote Tan anodized receiver, black furniture |
| Weight | 6.95 lbs (as configured, per CMMG) |
| Condition | New |
Key Features
- Forward Non-Reciprocating Side Charging Handle — Keeps your head down and eyes on target while chambering a round. No bolt carrier movement near your face.
- Adjustable Gas Block — Tune the rifle to your specific ammunition or suppressor. Reduces recoil and improves reliability with different loads.
- ZEROED Grip — Ergonomic angle promotes a natural wrist position. Reduces fatigue during long range sessions or hunting trips.
- 60/90 Ambi Safety — Switch between 60° and 90° throw angles. Gives you faster access to FIRE/SAFE without breaking your grip.
- Side Folding Stock with Adjustable Cheek Riser — Compact storage and transport, plus a custom cheek weld for precise sight alignment.
Who It’s For
This rifle suits the family shooter who wants one gun for both target practice and deer season. It also fits the beginner or youth shooter who needs a lighter, shorter platform but still wants ethical reach beyond 300 yards. The adjustable stock and gas block make it easy to adapt as skills grow.
Pros and Cons
- Pro: 6mm ARC delivers .243-level performance with 30% less recoil than .308 Win. You can shoot all day without shoulder fatigue.
- Pro: Coyote Tan finish resists glare and blends into field environments. Great for hunting or tactical classes.
- Con: 6mm ARC ammunition is less common than 5.56 NATO — you may need to order online or stock up during sales. Plan ahead for range trips.
Comparison
| Feature | CMMG DISSENT MK4 6mm ARC | Geissele Super Duty 6mm ARC | Agency Arms AAR-15 6mm ARC |
|---|---|---|---|
| Weight | 6.95 lbs | 7.2 lbs | 7.0 lbs |
| Barrel Length | 16.10″ | 16″ | 16″ |
| Charging Handle | Side, non-reciprocating | Rear, reciprocating | Rear, ambi |
| Stock | Side folding, adjustable cheek riser | Fixed, no riser | Fixed, no riser |
| Safety | 60/90 ambi | Standard 90° | Standard 90° |
| Gas Block | Adjustable | Fixed | Fixed |
| Price | $2,067.01 | $2,199.99 | $2,350.00 |
FAQ
What makes the side charging handle better for beginners?
The forward non-reciprocating handle lets you charge the rifle without moving your support hand off the forend. It also keeps your face away from the bolt — safer for new shooters learning proper form.
Can I use this rifle for hunting deer?
Yes. 6mm ARC with a 108-grain bullet delivers energy similar to .243 Winchester, effective on deer-sized game out to 400 yards. The adjustable gas block helps manage recoil for follow-up shots.
How do I adjust the gas block on this model?
Use a small Allen wrench (included) to turn the set screw on the gas block. Start fully closed, then open 1/4 turn at a time until the bolt locks back on an empty magazine. Refer to the manual for exact settings.
Does the side folding stock work with optics?
Yes. The stock folds to the left side, and the cheek riser clears most low-profile red dots and scopes. For larger scopes, you may need a riser mount — check your optic height.
What is the warranty on this CMMG rifle?
CMMG provides a limited lifetime warranty to the original owner against defects in materials and workmanship. Register your rifle online within 30 days of purchase.
Ready to Order
This CMMG 60AA90CCT DISSENT MK4 6mm ARC is in stock and ready to ship. Over 1,200 shooters have added this model to their collections in the past year alone (based on industry sales data).
- ✅ Nationwide delivery (all 50 states) — we ship to your FFL dealer
- ✅ Ships 1-2 business days after order confirmation
- ✅ 30-day returns — no restocking fee on unfired firearms
- ✅ Secure checkout with encrypted payment
Browse more AR Rifles or check out our 6mm ARC Ammunition and AR-15 Parts to complete your setup.
Last updated: April 2026
FFL Transfer & Firearms Laws for CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block
All firearms, including the CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: AR Rifles.
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Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
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FFL Transfer & Firearms Laws
All firearms, including the CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block, must be shipped to a licensed Federal Firearms License (FFL) dealer. A background check and any required local paperwork must be completed before you can take possession.
How It Works
- Place your order online.
- Send us your preferred local FFL dealer info.
- We ship the firearm to your FFL after verification.
- Complete background check and pick up from your dealer.
Legal Compliance
We comply with all U.S. firearm laws. It is your responsibility to ensure the CMMG 60AA90CCT Dissent MK4 6mm ARC 10+1 (2) 16.10″, Coyote Tan Rec/15″ M-Lok Handguard, Side Charging Handle, Black Side Folding Stock & Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block is legal in your state. Some states (e.g. CA, NY, NJ) have restrictions on magazine size or certain features.
Helpful Links
Need help? Contact our team — we’ll guide you through selecting a compliant firearm and the FFL transfer process.
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