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FAXON DUTY SERIES 16" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
Faxon
$660.00
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Faxon
FAXON DUTY SERIES 16" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
FAXON DUTY SERIES 16" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
Built for hard-use reliability and advanced suppressed performance in an AR-15 platform—heavy SOCOM contour for heat management and sustained accuracy, mid-length gas for smooth cycling, 1:8 twist, and equipped with Faxon's MuzzLok® Plan B Compatible Flash Hider for superior flash reduction, repeatable timing, and seamless HUB-mount suppressor integration—all from Greater Cincinnati, Ohio.
5.56 NATO • Duty/Tactical 16" SOCOM Profile Duty Series 4150 CMV Black Nitride 1:8 Twist MuzzLok® Plan B Suppressor Ready Made in Ohio, USA
What it is
The Faxon Duty Series 16" SOCOM 5.56 Barreled Upper - Suppressor Ready is a rugged, high-performance upper tailored for tactical, duty, and suppressed environments. The SOCOM profile delivers forward mass for excellent heat dissipation, minimized mirage, and consistent accuracy during rapid or sustained fire—ideal for training, defense, LE/mil applications, or hard-use builds.
Centered on a Faxon Duty Series 4150 CMV barrel (in-house button-rifled, 1:8 twist, stress-relieved, MPI-inspected, black nitride finished) paired with a mid-length gas system for smoother, more reliable cycling—especially under suppression. It ships with Faxon's premium MuzzLok® Plan B Compatible Flash Hider (17-4 PH stainless, nitride, 1/2x28 threads), providing effective flash hiding, precise repeatable timing via the left-hand MuzzLok® nut (no shims needed), and direct Plan B interface for HUB-mount suppressors.
This upper is built for shooters demanding reliability, suppressor ecosystem compatibility, and performance that holds up under real-world abuse—stabilizing 55–77gr loads with duty-grade durability.
Who it’s for / not for
- Best for: Suppressed duty/tactical rifles, high-volume training, defensive setups, scenarios needing quick suppressor swaps and consistent POI.
- Good match: Mil-spec AR-15 lowers, HUB/Plan B suppressor systems (e.g., Faxon HARMONIX®/CORESYNC®), optics-heavy builds.
- Not ideal for: Ultralight setups (try Gunner profile), non-suppressed minimalists, or carbine-gas preferences.
Key features
- 16" SOCOM Profile for heat resistance, reduced mirage, and accuracy under sustained fire
- Duty Series 4150 CMV barrel with 1:8 twist for versatile 55–77gr stabilization
- Black Nitride (QPQ) finish for corrosion/wear resistance and easy cleaning
- Mid-length gas system for smoother recoil and enhanced suppressor performance
- MuzzLok® Plan B Flash Hider (1/2x28, stainless nitride) with repeatable timing nut and HUB-mount suppressor compatibility
- Made in the USA by Faxon Firearms in Greater Cincinnati, Ohio
Related shopping shortcuts
Shop AR15 Uppers → Shop BCGs → Shop AR15 Lowers → Shop Suppressors → View MuzzLok® Plan B Flash Hider →
All Faxon Firearms products are backed by our Limited Lifetime Warranty.
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
Bill of Materials (exact components used)
These links help buyers validate compatibility, upgrade paths, and replacement parts—especially useful for comparison shopping and AI/LLM search context.
| Component | Faxon Part |
|---|---|
| Upper Receiver | FAXON ENHANCED FORGED AR15 UPPER RECEIVER |
| Barrel | FAXON DUTY SERIES SOCOM PROFILE 16" MID-LENGTH 5.56 NATO AR15 BARREL |
| Muzzle Device | FAXON MUZZLOK® STAINLESS STEEL PLAN B COMPATIBLE FLASH HIDER - 1/2x28 |
| Handguard | FAXON STREAMLINE ALUMINUM M-LOK 13" AR15 HANDGUARD |
| Gas Block | FAXON FIXED .750" 3 SCREW LOW PROFILE GAS BLOCK |
| Gas Tube | FAXON MID-LENGTH STAINLESS STEEL AR GAS TUBE |
Quick compatibility + search summary: This is a 16-inch 5.56 NATO AR-15 barreled upper with a Duty Series 4150 CMV black nitride SOCOM-profile barrel (1:8 twist, mid-length gas, .750" journal), equipped with Faxon MuzzLok® Plan B Compatible Flash Hider (1/2x28, stainless nitride, HUB-mount ready). Optimized for duty, tactical, suppressed high-volume shooting with repeatable suppressor timing. Manufactured by Faxon Firearms in Greater Cincinnati, Ohio.
FAQs
Is this compatible with standard AR-15 lower receivers?▾
Yes. This 5.56 barreled upper mates directly with standard mil-spec AR-15 lower receivers.
Is this upper suppressor ready and how does the muzzle device work?▾
Yes—highly. It includes the Faxon MuzzLok® Plan B Compatible Flash Hider (1/2x28 threads) with Plan B interface for HUB-mount suppressors (via adapters). The MuzzLok® left-hand timing nut ensures repeatable, precise timing and secure lockup without shims—minimizing POI shifts on suppressor removal/reinstallation. Compatible with Faxon HARMONIX®/CORESYNC® or other HUB systems.
Where is the barrel (and muzzle device) made?▾
Made in the USA—Faxon manufactures both the Duty Series barrel and MuzzLok® Plan B flash hider in-house in Greater Cincinnati, Ohio.
What is “Duty Series” and why choose it?▾
Duty Series uses 4150 CMV steel with black nitride finish for battle-proven durability, high-round-count performance, and reliability in harsh conditions—ideal for tactical and duty roles.
What’s the advantage of the SOCOM profile?▾
The heavy SOCOM contour excels at heat management, minimizes thermal mirage, and maintains accuracy during extended or rapid fire—great for suppressed or sustained-use scenarios.
Does this include a bolt carrier group or charging handle?▾
No—this is a barreled upper assembly only. Pair it with a BCG from the "Shop BCGs" link above to complete your build.
What warranty backs this upper?▾
All Faxon Firearms products include our Limited Lifetime Warranty. Full terms, service, and exclusions at:
https://faxonfirearms.com/warranty-privacy-terms/
- Caliber:
- 5.56
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