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FAXON DUTY SERIES 10.5" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
Faxon
$660.00
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Faxon
FAXON DUTY SERIES 10.5" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
FAXON DUTY SERIES 10.5" SOCOM 5.56 BARRELED UPPER - SUPPRESSOR READY
Compact, rugged, and built for suppressed performance — heavy SOCOM contour barrel for exceptional heat control and sustained accuracy, carbine-length gas system for reliable short-barrel cycling, 1:8 twist, and Faxon’s MuzzLok® Plan B flash hider for flash reduction, precise repeatable timing, and fast HUB-mount suppressor attachment — precision-crafted in Greater Cincinnati, Ohio.
5.56 NATO • Duty/Tactical 10.5" SOCOM Profile Duty Series 4150 CMV Black Nitride QPQ 1:8 Twist Carbine Gas MuzzLok® Plan B Suppressor Ready Made in Ohio, USA
What it is
The Faxon Duty Series 10.5" SOCOM 5.56 Barreled Upper - Suppressor Ready delivers compact, no-compromise performance for AR pistols, braced builds, and short-barreled rifles used in tactical, duty, and defensive roles. The heavy SOCOM contour adds forward mass to tame heat, reduce mirage, and keep groups tight during rapid or sustained fire — exactly what you want when the barrel is short and the rate of fire is high.
Core is Faxon’s in-house button-rifled Duty Series 4150 CrMoV barrel with 1:8 twist, magnetic particle inspected, stress-relieved, and finished in durable black nitride (QPQ). It pairs with a carbine-length gas system and fixed low-profile gas block, plus Faxon’s MuzzLok® Plan B flash hider (1/2×28, .250" bore, stainless nitride) for effective flash hiding, rock-solid repeatable timing (no shims), and direct compatibility with HUB-mount suppressors.
Perfect for shooters who demand short-barrel reliability, suppressor-ready convenience, and duty-grade toughness — all in a lightweight, modular package.
Who it’s for / not for
- Best for: Suppressed AR pistols, SBR/PDW builds, close-quarters tactical, vehicle defense, high-volume training in confined spaces.
- Good match: Mil-spec AR-15 lowers, HUB/Plan B suppressors (Faxon HARMONIX®/CORESYNC® etc.), red-dot or holographic optics, braced or registered SBR platforms.
- Not ideal for: Long-range precision (consider 16"+ barrels), ultralight competition, or unsuppressed minimalists who prefer mid-length gas.
Key features
- 10.5" SOCOM Profile Barrel — heavy contour for heat management, reduced mirage, and accuracy under rapid fire
- 4150 CrMoV Steel • Black Nitride — proven durability, corrosion resistance, easy maintenance
- 1:8 Twist Rate — stabilizes popular 55–77 gr 5.56 loads effectively
- Carbine-Length Gas System — reliable function in short barrels, compatible with suppression
- MuzzLok® Plan B Flash Hider — flash reduction + HUB suppressor compatibility with repeatable, shim-free timing
- Faxon Streamline 9" M-LOK Handguard — lightweight, modular accessory mounting
- Made in Greater Cincinnati, Ohio — 100% Faxon Firearms manufactured & assembled
Related shopping shortcuts
Backed by Faxon Firearms’ Limited Lifetime Warranty.
Full terms & exclusions: https://faxonfirearms.com/warranty-privacy-terms/
Bill of Materials (exact components used)
Use these links to verify compatibility, plan upgrades, or source spare parts.
| Component | Faxon Part |
|---|---|
| Upper Receiver | FAXON ENHANCED FORGED AR15 UPPER RECEIVER - STRIPPED W/COMPLETION KIT |
| Barrel | FAXON DUTY SERIES SOCOM PROFILE 10.5" CARBINE-LENGTH 5.56 NATO AR15 BARREL |
| Muzzle Device | FAXON MUZZLOK® STAINLESS STEEL PLAN B FLASH HIDER 1/2X28 - .250" BORE |
| Handguard | FAXON STREAMLINE ALUMINUM M-LOK 9" AR15 HANDGUARD |
| Gas Block | FAXON FIXED .750" 3 SCREW LOW PROFILE GAS BLOCK |
| Gas Tube | FAXON CARBINE LENGTH STAINLESS STEEL AR GAS TUBE |
Quick specs summary: 10.5" 5.56 NATO Duty Series SOCOM-profile barreled upper, 4150 CMV black nitride barrel, 1:8 twist, carbine-length gas, Faxon Streamline 9" M-LOK handguard, MuzzLok® Plan B flash hider (1/2×28, .250" bore). Built for compact suppressed duty, tactical, and high-volume use. Made by Faxon Firearms in Greater Cincinnati, Ohio.
FAQs
Will this upper work on any standard AR-15 lower?▾
Yes — completely compatible with any mil-spec AR-15 lower receiver.
Is this upper suppressor ready?▾
Yes — optimized for suppression. Ships with Faxon MuzzLok® Plan B flash hider (1/2×28, .250" bore) for direct HUB-mount suppressor compatibility. Timing nut ensures repeatable POI with minimal shift when removing/reinstalling the can.
Where is this upper manufactured?▾
100% made in the USA — barrel, machining, muzzle device, and final assembly all performed by Faxon Firearms in Greater Cincinnati, Ohio.
What does the SOCOM profile do for a 10.5" barrel?▾
The heavier contour dramatically improves heat dissipation and reduces mirage compared to lightweight profiles, helping maintain accuracy and point of impact during rapid or prolonged fire — especially valuable on short barrels that run hot quickly.
Does this include BCG and charging handle?▾
No — this is a complete barreled upper only. You will need to add a bolt carrier group and charging handle (see related shopping links above).
What warranty covers this product?▾
Faxon Firearms Limited Lifetime Warranty. Full details, terms, and service info available at:
https://faxonfirearms.com/warranty-privacy-terms/
- Caliber:
- 5.56 NATO
