CMMG RESOLUTE FOB — .223 Rem / 5.56 NATO, 10+1 Capacity | Black Nitride Barrel, Picatinny-Top Receiver, Ambidextrous Controls (Model 55A1F0B | UPC 810144729992)
Meet the modern, do-everything carbine built for reliability: the CMMG RESOLUTE FOB. Chambered for .223 Remington / 5.56 NATO with a compliant 10+1 configuration, this rifle blends CMMG’s proven engineering with mission-ready features—black nitride barrel treatment for longevity, a full-length Picatinny rail for optics, and ambidextrous controls that keep the manual of arms smooth for right- and left-handed shooters alike. Whether you’re building a defensive setup or a range-ready training carbine, the RESOLUTE FOB delivers rugged performance with clean, modular ergonomics.
Why Choose the CMMG RESOLUTE FOB?
Do-it-all chambering: Runs common .223 Rem/5.56 NATO loads for training, competition practice, and defensive setups.
Durable black nitride barrel: Nitride/hardening treatment enhances corrosion resistance, surface hardness, and barrel life while maintaining easy cleaning.
Ambidextrous controls: Modern AR ergonomics with mirrored controls to streamline reloads, lock-backs, and manipulations—no matter your dominant hand.
Optics-ready out of the box: Picatinny-top receiver offers immediate compatibility with red dots, LPVOs, magnifiers, irons, and night-optics.
10+1 configuration: Compliant capacity for restrictive jurisdictions while preserving the handling and balance you expect from a premium carbine.
CMMG fit & finish: Tight tolerances, clean machining, and thoughtful parts selection that have made RESOLUTE a favorite with enthusiasts and professionals.
Key Features at a Glance
Caliber: .223 Rem / 5.56 NATO
Capacity: 10+1
Barrel: Black nitride treated for longevity and corrosion resistance
Receiver: Picatinny rail for optics and accessories
Controls: Ambidextrous (safety/other control configuration may vary by production)
Finish: Black
Model: 55A1F0B
UPC: 810144729992
Note: Exact handguard style, muzzle device, trigger type, and furniture can vary by production lot or retailer configuration; confirm the package contents for the rifle you purchase.
Built for Real-World Use
Reliability first: The nitride-treated barrel and quality bolt system provide smooth cycling with a wide range of 5.56/.223 ammunition.
Modular from day one: Picatinny top rail and M-LOK-friendly handguards (on many RESOLUTE models) let you mount lights, bipods, sling hardware, and lasers exactly where you want them.
Balanced handling: The RESOLUTE line is known for practical weight distribution—quick to the shoulder, steady on target, and easy to maneuver in tight spaces.
Consistent accuracy: The combination of a rigid receiver set, quality barrel treatment, and good optics mounting points supports repeatable point of impact during extended sessions.
Ideal Applications
Home & Property Defense: Ambi controls and optics-ready layout make it simple to configure for your role.
Training & Range Days: Soft recoil impulse and affordable .223/5.56 options keep costs reasonable as you build skills.
Competition Practice: Perfect for drilling fundamentals before stepping onto a 2-Gun/3-Gun stage (verify your rule set).
General Purpose Carbine: A flexible foundation for any build path—add a suppressor-ready muzzle device, sling, and preferred glass.
Suggested Setup Ideas
Optics: Start with a durable red dot for CQB speed or a 1–6x / 1–8x LPVO for do-all use.
Sling: Two-point adjustable sling for transitions and support-side shooting.
Light: Compact weapon light on the support-hand side for target ID.
Trigger/Grip: Upgrade as desired; the platform accepts popular AR-pattern components.
Specifications (Quick Reference)
Platform: AR-pattern rifle (CMMG RESOLUTE FOB)
Caliber: .223 Rem / 5.56x45 NATO
Capacity: 10+1
Barrel Treatment: Black nitride
Receiver/Top: Picatinny rail (optics-ready)
Controls: Ambidextrous
Color: Black
Model Number: 55A1F0B
UPC: 810144729992
What’s in the Box
CMMG RESOLUTE FOB rifle (.223 Rem/5.56 NATO)
10-round magazine (quantity may vary by retailer/region)
Owner’s manual and documentation
Factory lock or accessories as provided by CMMG (varies by shipment)
FAQs
Q: Can I run both .223 Rem and 5.56 NATO?
A: Yes—rifles chambered for 5.56 NATO safely fire both 5.56 NATO and .223 Rem. Always verify markings on your barrel and follow the manufacturer’s guidance.
Q: Is the barrel chrome-lined or nitride?
A: This configuration lists a black nitride barrel treatment for extended service life and corrosion resistance.
Q: What magazine type does it use?
A: Standard AR-15 pattern 5.56 magazines. This model includes a 10-round magazine for compliance.
Q: Are the controls fully ambi?
A: The RESOLUTE FOB features ambidextrous controls; the exact set (safety, mag release, bolt catch) may vary by run—confirm with your retailer if a specific control is required.
Q: Is it optics-ready?
A: Yes. The Picatinny-top receiver supports a wide range of optics and iron sights.
SEO-Friendly Highlights (Naturally Woven)
CMMG RESOLUTE FOB .223/5.56 rifle, 10+1 capacity, black nitride barrel, ambidextrous controls, Picatinny rail receiver, model 55A1F0B, UPC 810144729992, optics-ready AR-15 carbine, compliant 10-round 5.56 rifle.
Compliance & Safety
Know your laws: Firearm features and magazine capacity are regulated at federal, state, and local levels. Confirm legality in your jurisdiction.
Safe handling: Keep the muzzle in a safe direction, finger off the trigger until on target, and always verify what’s beyond your target.
Maintenance: Follow CMMG’s manual for lubrication points, torque specs, and barrel break-in/cleaning for best results.
Meta for Your Product Page
Meta Title: CMMG RESOLUTE FOB — .223 Rem / 5.56 NATO, 10+1 | Black Nitride Barrel, Ambi Controls | 55A1F0B
Meta Description: Shop the CMMG RESOLUTE FOB carbine in .223/5.56 with a 10+1 capacity. Black nitride barrel, Picatinny-top receiver, ambidextrous controls. Model 55A1F0B — UPC 810144729992.
Build your all-purpose setup on a rock-solid foundation—CMMG RESOLUTE FOB brings dependable accuracy, modern ergonomics, and optics-ready versatility to every range day and defensive plan.
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