CMMG DISSENT MK4 16.1 CHGRN
Video review
Expert review
About this product
The CMMG DISSENT MK4 16.1 CHGRN is a 5.56mm compact rifle that redefines AR-platform portability through a folding chassis and a 16.1-inch barrel, functioning without a traditional buffer tube to maintain reliability while folded. This configuration delivers NFA-compliant overall length in a package that collapses to under 26 inches for discrete transport, pairing that mechanical innovation with a fully ambidextrous control suite and an adjustable gas system for suppressor optimization. Developed from CMMG's radial delayed blowback experience, the DISSENT platform solves the folding stock reliability problem that has plagued AR-pattern firearms for decades.
What is the CMMG DISSENT MK4 16.1 CHGRN used for?
This rifle is engineered for the shooter who needs maximum compactness without compromising terminal ballistics or entering NFA-regulated territory, making it ideal for vehicle-based defense, ranch perimeter patrol, or as a discrete truck gun that deploys rapidly from a folded configuration. The 16.1-inch barrel retains effective 5.56mm velocity while the folding mechanism reduces overall transport length to 25.9 inches—nearly 10 inches shorter than a standard AR carbine with the stock extended. This allows it to fit in spaces like a compact backpack or behind a vehicle seat where traditional rifles won't, while maintaining immediate functionality when unfolded.
How does the CMMG DISSENT MK4 16.1 CHGRN compare to the Springfield Armory SAINT Edge Pistol?
The DISSENT MK4 offers a legally distinct advantage over pistol-brace platforms like the Springfield Armory SAINT Edge: it maintains full rifle classification with a 16.1-inch barrel and folding stock while achieving similar compactness, avoiding the regulatory uncertainty surrounding pistol braces and stabilizing supports. Where the SAINT Edge pistol measures approximately 26.5 inches with a collapsed brace, the DISSENT MK4 folds to 25.9 inches, provides superior cheek weld with its adjustable riser, and avoids ATF Form 4473 complications associated with pistol-to-rifle conversions. The DISSENT is better for shooters who prioritize regulatory simplicity and want a true stock rather than a brace, while the SAINT Edge platform may offer slightly faster deployment from some carry configurations.
What does it weigh and what are the dimensions?
The DISSENT MK4 weighs 7.7 pounds unloaded and measures 25.9 inches in its folded configuration, expanding to 36.6 inches with the stock fully extended and the length of pull adjusted to its maximum setting. That 7.7-pound weight includes the CMMG Zeroed muzzle brake and aluminum upper/lower receiver set, making it approximately 6 ounces heavier than a comparable BCM Recce-16 due to its reinforced folding hinge mechanism and chassis system. The barrel alone accounts for 1.8 pounds of that total, with the 1:7.5 twist rate optimized for stabilizing heavier 62-77 grain projectiles commonly used in defensive and barrier-penetration scenarios.
Who is this NOT for?
This rifle is a poor choice for competition shooters who prioritize absolute weight reduction or benchrest precision enthusiasts who require free-floated handguards and match-grade barrel profiling not present here. The folding mechanism adds both mechanical complexity and approximately $400 to the base price compared to a standard AR-15 like the Stevens 334 in .308 Win, making it economically inefficient for shooters who won't utilize the folding capability regularly. Additionally, those who exclusively shoot suppressed may find the adjustable gas block requires more frequent maintenance than a fixed system when running dirty ammunition.
What's in the box?
CMMG ships the DISSENT MK4 with one 10-round PMAG, the CMMG Zeroed muzzle brake already installed and timed, a single-stage Zeroed drop-in trigger set at approximately 4.5 pounds pull weight, and the necessary tool for adjusting the gas block's six-position selector. Notably absent are backup iron sights, a sling, or any optic mounting solution—CMMG assumes the buyer will select these components based on their specific application, keeping the base package focused on the rifle's mechanical innovations. The included manual details the proprietary takedown procedure required for the folding hinge, which differs substantially from standard AR-15 field stripping.
Is the CMMG DISSENT MK4 16.1 CHGRN worth it at $1749.99?
At $1749.99, this rifle justifies its premium for shooters who specifically need the folding capability while maintaining rifle classification, representing approximately a 35% price increase over comparable non-folding AR-15 platforms from brands like BCM or Daniel Defense. The engineering investment in the recoil system that eliminates the buffer tube creates legitimate value that cheaper folding adapters cannot match, particularly when compared to aftermarket solutions that often compromise reliability. For those whose use case doesn't demand folding capability, a traditional Stevens 334 bolt-action rifle at one-third the price may deliver comparable accuracy for hunting applications without the mechanical complexity.
Specs at a glance
Pros & cons
What works
- Folds to 25.9 inches - 42% shorter than standard AR-15 with stock extended
- Adjustable gas block with 6 positions - enables optimal function with suppressor or low-pressure ammunition
- Proprietary recoil system eliminates buffer tube - maintains reliability while folded where adapters fail
- Fully ambidextrous controls - including non-reciprocating charging handle and 60/90-degree safety selector
Trade-offs
- Proprietary upper receiver - incompatible with standard AR-15 handguards and aftermarket rails
- 7.7-pound weight - 6-8 ounces heavier than comparable non-folding AR-15 platforms
- Limited aftermarket support - folding mechanism parts available only through CMMG directly
- No iron sights included - adds $100-200 for backup sight system
Key attributes
| upc | 810148627263 |
| manufacturer | CMMG |
| manufacturer part number | 28AB60CCG |
| barrel length | 16.10" |
| caliber/gauge | .22 ARC |
| capacity | 10 + 1 |
| safety | CMMG Zeroed 60/90 Degree |
Frequently asked questions
- Is it compatible with standard AR-15 handguards?
- No, the DISSENT MK4 uses a proprietary upper receiver and handguard interface that is not compatible with standard MIL-SPEC AR-15 components. The rail system is M-LOK compatible but requires CMMG-specific mounting hardware for the forward section, and the gas block adjustment tool is unique to this platform. Aftermarket options are currently limited to what CMMG offers directly through their parts catalog.
- Does it fit in a standard rifle case?
- When folded to 25.9 inches, the DISSENT MK4 fits in compact rifle cases designed for 26-inch storage, such as the Savior Equipment Urban Warfare double rifle case or the Pelican 1700 series. The width with folded stock measures 9.2 inches at its widest point, requiring cases with at least 10 inches of interior clearance. For reference, it occupies approximately 30% less case volume than a standard AR-15 with fixed stock.
- How long does shipping take to an FFL?
- Ironclad Armory processes orders within 2 business days and ships via FedEx 2Day to your selected FFL dealer, with most deliveries completing within 3-5 business days from order placement. We require FFL information verification before shipment, which can add 24 hours to processing if documentation isn't pre-verified. All firearms ship with adult signature required and cannot be left at the FFL without proper identification.
- Can I return it if it doesn't fit my needs?
- Ironclad Armory accepts returns within 30 days only for unmodified firearms in original packaging with all included components, subject to a 15% restocking fee and return shipping costs. Once the firearm has been transferred through an FFL and taken possession, returns are generally not accepted unless there's a verified manufacturer defect. We strongly recommend contacting our sales team before purchase to ensure the DISSENT MK4 matches your specific requirements.
- Does this work with standard AR-15 magazines?
- Yes, the DISSENT MK4 accepts all standard AR-15 pattern magazines including Magpul PMAGs, Lancer L5AWM, and USGI aluminum magazines without modification. The lower receiver uses a standard magazine well dimension and magazine release, though we recommend testing with your specific magazines as some aftermarket extended basepads may interfere with the folding mechanism when the stock is collapsed. The rifle ships configured for 10-round capacity but functions with standard 30-round magazines where legally permissible.
- Is the barrel threaded for suppressors?
- Yes, the 16.1-inch barrel features a standard 1/2x28 threaded muzzle with proper timing shims for the included CMMG Zeroed muzzle brake, which must be removed for direct suppressor attachment. The threads are cut to SAAMI specifications with a relief cut for crush washers, and we recommend using a suppressor alignment rod before mounting any can. The adjustable gas block has six positions specifically optimized for suppressor use with standard 5.56mm cans.