Faxon Firearms Match Series 12.5" 338 ARC Complete Upper Receiver - Suppressor Ready

Faxon Match Series 12.5" 338 ARC Gunner 1:8T Complete Upper - Suppressor Ready (FX-URG-M33A125GA1075-C-SR)

Build a compact, hard-hitting suppressed 338 ARC platform with the Faxon Match Series 12.5" 338 ARC Gunner Complete Upper—a factory-assembled, suppressor-ready upper engineered for precision, reliability, and versatility. This complete drop-in assembly combines a premium Match Series Gunner barrel, purpose-built 338 ARC upper receiver with enhanced feed ramps, adjustable gas block, Plan B compatible muzzle device, superfinished BCG, and gas-blocking charging handle—ideal for hunting, tactical use, subsonic/supersonic mixed loads, or any build where suppressed performance and compact maneuverability are priorities.

Featuring a 12.5" Gunner-profile barrel (1:8 twist, pistol-length gas) optimized for both subsonic and supersonic 338 ARC ammo, a forged 338 ARC enhanced AR15 upper with modified feed ramps for flawless cycling, a patented adjustable .750" low-profile gas block for tuning suppressed/unsuppressed operation, MuzzLok® stainless steel Plan B compatible flash hider, 10.75" Streamline M-LOK handguard, and a lightweight Type 2 BCG with nitride finish, this upper is ready to pair with your AR15 lower for immediate use. Made in Ohio with Faxon's vertical integration for consistent quality and performance.

Key Features

• Complete upper assembly including barrel, receiver, handguard, BCG, charging handle, gas block/tube, and muzzle device — drop-in ready
• Match Series 12.5" Gunner-profile barrel (1:8 twist, pistol-length gas) for accuracy, consistency, and compact handling with 338 ARC
• 338 ARC enhanced forged AR15 upper receiver with modified feed ramps for reliable feeding across subsonic and supersonic loads
• Patented adjustable .750" low-profile gas block (3-screw) for precise tuning suppressed or unsuppressed
• MuzzLok® stainless steel Plan B compatible flash hider (5/8x24 threads, .375" bore) for modern suppressor mounting
• 10.75" Streamline aluminum M-LOK handguard with continuous top rail for optics and accessories
• Faxon superfinished 6.5 Grendel/ARC Gunner lightweight Type 2 BCG (.136 nitride) for smooth cycling and reduced friction
• Faxon Edition Breek® Sledgehammer gas-blocking charging handle to minimize blowback when suppressed
• Pistol-length stainless steel gas tube for reliable gas delivery in short-barreled configurations
• 100% Made in Ohio with Faxon's lifetime warranty and vertical manufacturing control

Specifications

• Manufacturer: Faxon Firearms
• Model: Match Series 12.5" 338 ARC Gunner Complete Upper - Suppressor Ready
• Manufacturer Part Number: FX-URG-M33A125GA1075-C-SR
• Caliber: 338 ARC
• Barrel Length: 12.5"
• Barrel Profile: Gunner
• Twist Rate: 1:8
• Gas System: Pistol Length
• Upper Receiver: 338 ARC Enhanced Forged AR15 (modified feed ramps)
• Handguard: Streamline Aluminum M-LOK 10.75"
• Gas Block: Adjustable .750" low-profile (3-screw)
• Muzzle Device: MuzzLok® Plan B compatible flash hider (5/8x24, .375" bore, stainless steel)
• BCG: Faxon superfinished 6.5 Grendel/ARC Gunner lightweight Type 2 (.136 nitride)
• Charging Handle: Faxon Edition Breek® Sledgehammer gas-blocking
• Gas Tube: Pistol length stainless steel
• Compatibility: Mil-spec AR15 lowers; suppressor mounting (verify bore/mount); subsonic & supersonic 338 ARC ammo
• UPC: 810209951085

Whether you're hunting with subsonics, running supersonic for longer range, or building a compact suppressed 338 ARC host, this Faxon Match Series complete upper provides the right foundation—tuned gas, enhanced feeding, and suppressor-ready components—for consistent performance. Pair it with your lower and get to shooting.

*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.

Add this suppressor-ready 338 ARC complete upper to your cart today and experience premium, out-of-the-box reliability on your next hunt or range day!