CMMG RESOLUTE® MK4 — .300 Blackout, 14.5" Barrel, 30-Round | Model 30A240ATI | UPC 810103479807
A Hard-Use, Do-It-All .300 BLK Carbine—Built on the Proven RESOLUTE® Platform
The CMMG RESOLUTE® MK4 in .300 Blackout pairs a maneuverable 14.5" barrel with the accuracy and ergonomics that made the RESOLUTE a go-to general-purpose AR. Whether you’re training, hunting in thick timber, or building a low-flash, suppressor-friendly setup (where legal), this configuration delivers smooth cycling, free-float precision, and optics-ready convenience in a rugged Cerakote® finish that’s ready for real-world use.
Caliber: .300 Blackout • Barrel: 14.5" (threaded muzzle) • Capacity: 30+1 (where legal) • Finish: Cerakote® (Titanium-tone family) • Platform: MK4 (AR-15 pattern) • Model: 30A240ATI • UPC: 810103479807
Why Choose .300 BLK in a 14.5" RESOLUTE?
Optimized for Supers & Subs
.300 Blackout excels with supersonic hunting/defense loads and subsonic ammunition for reduced blast—ideal when paired with a properly configured muzzle device or suppressor (where legal).
The 14.5" Sweet Spot
A 14.5" barrel balances velocity and handling for tight quarters, vehicles, and brush. It’s fast on target while retaining practical downrange performance with modern .300 BLK loads.
Free-Float Accuracy & Accessory Freedom
The free-float M-LOK® handguard (length may vary by batch) preserves point of impact under sling or barricade load and gives you real estate for a white light, hand stop, QD cups, and switches.
Optics-Ready Upper with Full-Length Rail
Mount a micro red dot, prism, or LPVO on the Picatinny top rail and you’re ready for anything from CQB drills to field work at intermediate distances.
Durable Cerakote® Finish
A tough, low-glare Cerakote® (Titanium-tone family) resists abrasion and corrosion while looking downright premium with black furniture and accessories.
Key Features at a Glance
Caliber: .300 Blackout (supersonic & subsonic capable)
Barrel: 14.5", medium profile, threaded muzzle* for devices/mounts
Handguard: Free-float M-LOK® forend; top Picatinny optics rail
Controls: AR-pattern manual safety; accepts STANAG magazines
Furniture: Modern polymer grip/stock set (varies by production)
Finish: Cerakote® Titanium-tone (model code ATI)
Capacity: 30 rounds (where permitted)
Model / UPC: 30A240ATI / 810103479807
*Thread pitch: .300 BLK barrels commonly use 5/8×24; always verify the exact pitch on your serialized spec card before purchasing muzzle devices or suppressor mounts.
Note: Muzzle device type, gas system length, trigger, and handguard length may vary by production run or retailer bundle. Check your product label for definitive configuration.
Performance You’ll Notice
Controlled Recoil, Fast Follow-Ups
.300 BLK’s predictable impulse plus a quality muzzle device yields flat tracking for quick splits and confident transitions.
Consistent Zero
Free-float geometry keeps sling/barricade pressure off the barrel, supporting repeatable groups and stable POI with both supersonic and subsonic loads.
Build-Friendly
With M-LOK® slots and an optics-ready rail, you can tailor the rifle for defense, duty-style classes, or woods hunting in minutes.
Ideal Use Cases
Home & Property Defense: Low-flash .300 BLK loads perform well indoors/outdoors
Thick-Cover Hunting: Short OAL + .30-cal bullet choices for hogs/deer (where legal)
Training & Classes: Soft recoil, accessory real estate, and free-float accuracy
Suppressed Setups: Subsonic-friendly caliber with proper gas/mounting (where legal)
Smart Setup Recommendations
Optic: Micro red dot for speed or an LPVO (1-6× / 1-8×) for versatility
Light: Compact M-LOK® weapon light with momentary/remote switch
Sling: Two-point QD sling; add QD cups where you want them
Muzzle Device: Confirm 5/8×24 (most .300 BLK) before choosing a brake, comp, or suppressor mount
Ammo: Zero with your intended role (supers vs. subs) and confirm function across loads
Technical Specifications (General)
Platform: CMMG RESOLUTE® MK4 (AR-15 pattern)
Caliber: .300 Blackout
Barrel Length: 14.5" (threaded; pitch varies—verify)
Handguard: Free-float M-LOK®
Upper/Lower: Aluminum receivers, Picatinny optics rail
Finish: Cerakote® Titanium-tone (ATI)
Safety: Manual safety, AR-pattern controls
Capacity: 30+1 (where permitted)
Model: 30A240ATI
UPC: 810103479807
Frequently Asked Questions
Q: Is the barrel pinned and welded to 16" OAL?
A: Some 14.5" configurations are pinned/welded, others are not. Refer to your specific rifle’s spec card/label and comply with all applicable laws.
Q: What magazines does it use?
A: Standard AR-15/STANAG magazines. Use quality mags for best reliability with subsonic and flat-nose bullets.
Q: Can I run it suppressed?
A: Typically yes—verify thread pitch, choose a compatible mount, and test cycling with your chosen subsonic/supersonic loads. Follow all local laws.
Q: Gas system length?
A: Gas system length can vary by run; check your serialized spec card for this SKU.
SEO-Rich Highlights & Buyer Keywords
CMMG RESOLUTE MK4 .300 Blackout with 14.5" barrel
Free-float M-LOK handguard, optics-ready Picatinny top rail
Cerakote Titanium-tone finish (ATI), 30-round capacity
Threaded muzzle (.300 BLK; verify 5/8×24) for brakes/suppressors
Model 30A240ATI, UPC 810103479807
Meta Title (SEO)
CMMG RESOLUTE MK4 — .300 Blackout, 14.5", Free-Float M-LOK, Cerakote Titanium | 30A240ATI
Meta Description (SEO)
Run a capable .300 BLK carbine with the CMMG RESOLUTE MK4: 14.5" barrel, free-float M-LOK handguard, optics-ready rail, and Cerakote Titanium-tone finish. 30-round capacity (where legal). Model 30A240ATI, UPC 810103479807.
Structured Data (Product Schema JSON-LD)
Responsible Use Reminder
Comply with all local, state, and federal laws regarding overall length, muzzle devices, suppressors, and magazine capacity. Verify thread pitch and included parts on your product label, confirm reliability with both supersonic and subsonic ammunition, and practice safe handling and secure storage.
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