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FAXON MATCH SERIES 12.5" 338 ARC GUNNER 1:8T COMPLETE UPPER - SUPPRESSOR READY
Faxon
$978.00
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Faxon
FAXON MATCH SERIES 12.5" 338 ARC GUNNER 1:8T COMPLETE UPPER - SUPPRESSOR READY
Match Series Complete Upper • 338 ARC • Suppressor Ready
FAXON MATCH SERIES 12.5" 338 ARC GUNNER 1:8T COMPLETE UPPER - SUPPRESSOR READY
12.5" Gunner Profile 338 ARC 1:8 Twist Pistol-Length Gas Adjustable .750 Gas Block Plan B Compatible Flash Hider Complete Upper Suppressor Ready Made in Ohio
The FAXON MATCH SERIES 12.5" 338 ARC GUNNER 1:8T COMPLETE UPPER - SUPPRESSOR READY is built for shooters who want a compact, hard-hitting 338 ARC upper with the right parts already in place for a serious suppressed host. This is a complete upper assembly, not just a barreled upper, so it includes the core performance pieces that matter: a Match Series 12.5" 338 ARC Gunner barrel, a purpose-built 338 ARC forged upper receiver, a Faxon adjustable gas block, a Plan B compatible MuzzLok® flash hider, a Faxon 6.5 Grendel/ARC Type 2 BCG, and a Faxon Edition Breek® Sledgehammer gas-blocking charging handle.
This matters because 338 ARC is an ecosystem cartridge. Reliability is not just about barrel length or twist. It is about feed geometry, gas control, bolt compatibility, suppressor mounting, and how the upper behaves with both subsonic and supersonic ammunition. That is why this upper uses the FAXON 338 ARC ENHANCED FORGED AR15 UPPER RECEIVER with modified feed ramps, the Faxon patented adjustable .750" low profile gas block, and the Faxon MuzzLok® stainless steel Plan B compatible flash hider. It is designed to help you get to a cleaner, better-tuned suppressed setup faster.
At the center of the build is the Faxon Match Series Gunner Profile 12.5" 1:8T pistol-length 338 ARC AR15 barrel. Match Series barrels are built for shooters who care about precision, consistency, and real-world performance. The Gunner profile keeps weight controlled without turning the upper into a soft-use range toy, and the 1:8 twist is the right fit for modern 338 ARC use cases where both heavier subsonics and practical supersonics matter.
Why choose this over a standard 338 ARC upper?
Choose this setup if you want a complete, suppressor-forward upper with the correct 338 ARC feed path, adjustable gas tuning, included BCG, included charging handle, and a modern Plan B compatible muzzle mounting path. It is built for buyers who want fewer guesswork decisions and more confidence at assembly and on the range.
Choose this setup if you want a complete, suppressor-forward upper with the correct 338 ARC feed path, adjustable gas tuning, included BCG, included charging handle, and a modern Plan B compatible muzzle mounting path. It is built for buyers who want fewer guesswork decisions and more confidence at assembly and on the range.
Best for: suppressed hunting builds, compact utility rifles, range setups that may alternate between subsonic and supersonic 338 ARC, and shooters who want a ready-to-finish complete upper with purpose-built 338 ARC geometry.
Not for: buyers looking for a full firearm, buyers who do not want to tune gas when running suppressed, or those wanting a long-barrel velocity-first setup.
Key Features
- Complete upper configuration with barrel, upper receiver, handguard, adjustable gas block, gas tube, BCG, charging handle, and muzzle device already selected.
- 338 ARC-specific upper receiver geometry with modified feed ramps to better support feeding and cycling with real-world 338 ARC ammunition.
- Suppressor-ready tuning foundation thanks to the adjustable gas block and gas-blocking charging handle.
- Modern suppressor mounting path via Faxon MuzzLok® stainless steel Plan B compatible flash hider with 5/8x24 threads and .375" bore.
- Faxon Match Series barrel performance for buyers who prioritize consistency, precision, and premium barrel construction.
- Compact 12.5" format built for maneuverability, packability, and practical suppressed use.
- Engineered by a real manufacturer with deep machining roots, in-house firearm production, and cartridge-platform experience.
338 ARC Cartridge Snapshot
Faxon was an early 338 ARC adopter, and this upper is built around the cartridge the way it should be built: as a full host system, not just a chambering. Hornady’s published 338 ARC lineup gives buyers a useful picture of how broad the cartridge already is, covering match, hunting, and subsonic roles.
Important: The factory ballistics below are Hornady published data from their listed test barrels. A 12.5" upper will generally produce lower velocity than Hornady’s 16" or 24" test barrels. Use these figures as cartridge context, not as guaranteed velocity for this exact upper.
| Hornady Load | Published Test Barrel | Muzzle Velocity | Muzzle Energy | Use Case |
|---|---|---|---|---|
| 175 gr HP Match™ BLACK™ | 16" | 2075 fps | 1673 ft-lb | Match / precision-oriented supersonic load |
| 170 gr MonoFlex® BLACK™ | 16" | 2075 fps | 1625 ft-lb | Hunting-oriented supersonic load |
| 215 gr FTX® BLACK™ | 16" | 1900 fps | 1723 ft-lb | Heavy-for-caliber supersonic hunting / utility load |
| 285 gr FMJ Frontier® Subsonic | 24" | 1050 fps | 698 ft-lb | Training / range subsonic option |
| 307 gr Sub-X® Subsonic | Hornady subsonic offering | See Hornady listing | See Hornady listing | Subsonic hunting / terminal-performance-focused option |
Hornady also identifies Faxon among the gun manufacturers associated with 338 ARC platform support, which makes this upper especially relevant for buyers searching for a proven 338 ARC host rather than a one-off parts mix.
Bill of Materials
- Upper Receiver: FAXON 338 ARC ENHANCED FORGED AR15 UPPER RECEIVER
- Barrel: FAXON MATCH SERIES GUNNER PROFILE 12.5" 1:8T PISTOL-LENGTH 338 ARC AR15 BARREL
- Muzzle Device: FAXON MUZZLOK® STAINLESS STEEL PLAN B COMPATIBLE FLASH HIDER 5/8X24 - .375" BORE
- Handguard: FAXON STREAMLINE ALUMINUM M-LOK 10.75" AR15 HANDGUARD
- Gas Block: FAXON PATENTED ADJUSTABLE .750" 3 SCREW LOW PROFILE GAS BLOCK
- Gas Tube: FAXON PISTOL LENGTH STAINLESS STEEL AR GAS TUBE
- Bolt Carrier Group: FAXON SUPERFINISHED 6.5 GRENDEL/ARC GUNNER LIGHTWEIGHT TYPE 2 BCG .136 - NITRIDE
- Charging Handle: FAXON EDITION BREEK® SLEDGEHAMMER AR15 GAS BLOCKING CHARGING HANDLE
Use-Case Fit
- Suppressed hunting: compact overall length, heavier-bullet cartridge capability, adjustable gas foundation.
- Compact utility rifle: ideal when you want more frontal authority than smaller-bore AR15 options.
- Mixed ammo use: built for buyers likely to experiment with both subsonic and supersonic 338 ARC.
- Builder confidence: better choice than piecing together a random upper when 338 ARC feed path and gas tuning matter.
Compatibility Notes
- Lower: compatible AR15 lower receiver required.
- Threads: 5/8x24 muzzle threads.
- Suppressor mounting: includes a Plan B compatible muzzle device.
- Gas tuning: adjustable gas block included because suppressors, ammo, and host setups vary.
- Receiver geometry: this is built around a 338 ARC-specific upper receiver, not a generic one-size-fits-all approach.
Keep Building
Warranty
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/
FAQs
Is this a complete firearm?▾
No. This is a complete upper assembly, not a complete firearm. You will still need a compatible AR15 lower receiver to finish the build.
What makes this upper “suppressor ready”?▾
This upper includes a Faxon patented adjustable .750" gas block, a gas-blocking charging handle, and a Plan B compatible muzzle device. That gives you a better foundation for tuning gas and mounting a suppressor than a standard upper with fixed gas and a generic muzzle device.
Why use a dedicated 338 ARC upper receiver?▾
The included FAXON 338 ARC ENHANCED FORGED AR15 UPPER RECEIVER uses modified feed ramps built around the cartridge. On 338 ARC, feed path matters more than it does on many standard AR15 chamberings, especially when shooters want reliable function with different bullet styles and suppressed setups.
Does this include the BCG and charging handle?▾
Yes. This is a complete upper and includes the Faxon 6.5 Grendel/ARC Gunner Lightweight Type 2 BCG (.136) and the Faxon Edition Breek® Sledgehammer gas-blocking charging handle.
What muzzle threads and suppressor mount path does it use?▾
The included flash hider uses 5/8x24 threads and is Plan B compatible with a .375" bore. Always verify suppressor bore size, mount compatibility, and cartridge suitability before live fire.
What is this upper best suited for?▾
This upper is best suited for compact suppressed builds, hunting-focused rifles, and buyers who want a serious 338 ARC host without piecing together each component individually.
Is this product made in the USA?▾
Faxon Firearms is a family-owned American manufacturer based in Greater Cincinnati, Ohio. This complete upper is built around Faxon components and Faxon manufacturing expertise, not generic reseller-sourced assemblies.
What warranty covers this complete upper?▾
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/
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/
- Caliber:
- 338 ARC
