CMMG DISSENT MK4 — .300 Blackout, 16.1" Barrel, Semi-Auto Rifle, Midnight Bronze Cerakote® | Model 30A750A-MB / 30A750AMB | UPC 810144721491
Meet the do-more blackout carbine. The CMMG DISSENT MK4 (.300 BLK) in Midnight Bronze Cerakote® combines a handy 16.1" barrel, a rigid free-float M-LOK® handguard, and AR-familiar controls to deliver a soft-shooting, suppressor-friendly platform that shines from woods to range. Whether you’re optimizing for subsonic quiet or supersonic punch, the DISSENT MK4 brings reliability, accuracy, and easy accessorizing in a tough, low-glare finish.
Why Choose the DISSENT MK4 in .300 BLK
.300 Blackout chambering — Run subsonic for low blast/signature (ideal for suppressed use where legal) or supersonic for added reach and energy.
16.1" barrel — Legal, velocity-friendly length with excellent handling; easy to tune with your preferred muzzle device or suppressor mount.
Free-float M-LOK® handguard — Solid accessory mounting that preserves barrel harmonics for better practical accuracy.
Midnight Bronze Cerakote® — Durable, abrasion- and corrosion-resistant finish that looks as good as it performs.
AR-pattern ergonomics — Familiar controls, ready for ambi upgrades; fast learning curve and intuitive manipulation.
Optic-ready — Top Pic rail for LPVOs, red dots, or dot+magnifier setups.
Built for Practical Precision
The DISSENT MK4’s free-float rail keeps pressure off the barrel so your zero stays put when you load barricades, add a bipod, or clamp a hand stop. Pair it with an LPVO (1–6×/1–8×) for do-everything versatility or a red dot + 3× magnifier for speed with mid-range reach. M-LOK slots give flexible mounting for white lights, QD sling cups, bipods, or pressure pads without crowding your grip.
.300 BLK Versatility: One Rifle, Two Personalities
Subsonic (with appropriate barrel twist and ammo): exceptionally quiet with a suppressor, minimal gas blast, and smooth recoil for fast follow-ups.
Supersonic: flatter trajectory and increased energy for general purpose range work and field use.
Switching loads is as simple as swapping magazines—no bolt change needed.
Handling & Control
Balanced 16.1" profile stays lively in tight spaces and blind/stand setups.
Muzzle device ready: choose a flash hider, brake, or suppressor mount to tailor recoil and signature.
QD-friendly handguard and stock interfaces support modern two-point sling techniques for stability and transitions.
Ideal Use Cases
Suppressor-friendly builds (where legal) emphasizing subsonic control
Range & training carbines with soft recoil and broad ammo options
Woods/brush roles where compact handling and energy at practical distances matter
Home & property defense configurations with appropriate ammo selection
Setup Tips for Best Results
Optic pairing: LPVO for do-all utility; red dot + magnifier for speed and simplicity.
Zero strategy: Common picks are 50/200 for general use or 100 yards if you’ll dial/hold often. Confirm holds for your specific subsonic and supersonic loads.
Gas & recoil tuning: If running a suppressor, consider an adjustable gas block or buffer tuning for optimal ejection and cleaner impulse.
Data card: Build dope for both subsonic and supersonic loads; note POI shift with and without your suppressor.
Safety, Compliance & Care
Know your laws: Ownership, suppressors, and magazine capacities vary by jurisdiction.
Maintenance: Keep the BCG lightly lubricated; check handguard, muzzle device, and optic fasteners after initial heat cycles.
Ammunition: Use quality .300 BLK from reputable makers; confirm function before critical use.
Specifications (At a Glance)
Model / SKU: 30A750A-MB / 30A750AMB
UPC: 810144721491
Caliber: .300 AAC Blackout (subsonic & supersonic compatible)
Action: Semi-automatic, AR-pattern
Barrel Length: 16.1 inches
Handguard: Free-float M-LOK®
Finish/Color: Midnight Bronze Cerakote®
Controls: AR-style; compatible with common ambidextrous upgrades
Magazine Type: AR-15 pattern .300 BLK/.223 mags (capacity varies by state/packaging)
Sights/Optic: Optic-ready (sights/optic not always included—check package contents)
Small-part configuration (trigger, muzzle device, furniture) may vary by production lot. Refer to your box contents or retailer listing for exact inclusions.
SEO-Friendly Highlights (Quick Scan)
CMMG DISSENT MK4 .300 Blackout semi-auto rifle
16.1" barrel, free-float M-LOK® handguard, Midnight Bronze finish
Suppressor-friendly platform; subsonic & supersonic capable
AR-pattern controls, optic-ready, rugged Cerakote® coating
Model 30A750A-MB / 30A750AMB | UPC 810144721491
The Bottom Line
The CMMG DISSENT MK4 (.300 BLK) in Midnight Bronze is the adaptable blackout carbine that does it all—soft recoil, suppressor readiness, accurate free-float construction, and proven AR controls. Configure it your way and enjoy reliable performance from quiet backyard steel to serious field use.
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