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FAXON ION SERIES 16" THREADED PENCIL 5.56 COMPLETE UPPER
Faxon
$1,175.00
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Faxon
FAXON ION SERIES 16" THREADED PENCIL 5.56 COMPLETE UPPER
FAXON ION SERIES 16" THREADED PENCIL 5.56 COMPLETE UPPER
Maximum performance, minimum weight — ultra-light 16" pencil barrel threaded for muzzle devices, mid-length gas tuned with Faxon’s patented adjustable block, 1:8 twist, Salt Bath Nitride finish, 15" carbon fiber handguard, lightweight Gunner BCG, ambidextrous charging handle, and Slim 3-Port Muzzle Brake for reduced recoil and flatter shooting — engineered for speed, balance, and competition-ready handling in Greater Cincinnati, Ohio.
5.56 NATO • Lightweight/Competition 16" Pencil Profile ION Series 4150 CMV Salt Bath Nitride 1:8 Twist Mid-Length Gas Patented Adjustable Gas Block Carbon Fiber Handguard Lightweight BCG Ambi Charging Handle Slim 3-Port Brake Made in Ohio, USA
What it is
The Faxon ION Series 16" Threaded Pencil 5.56 Complete Upper is a purpose-built, ultra-lightweight complete upper for shooters who demand speed, low recoil, and effortless handling without compromising reliability. The pencil profile barrel keeps front-end mass to a minimum for fast transitions and reduced fatigue, while the threaded muzzle comes equipped with the Faxon Slim 3-Port Muzzle Brake for reduced recoil and muzzle rise, enabling flatter, faster follow-up shots. Paired with premium Faxon components—including the enhanced forged upper, 15" carbon fiber handguard, patented adjustable gas block, lightweight Gunner BCG, and ambidextrous charging handle—this upper is ready for competition, dynamic training, defensive use, or any scenario where weight savings and quick manipulation are critical.
Centered on Faxon’s ION Series 4150 CMV barrel (button-rifled in-house, 1:8 twist, stress-relieved, MPI-inspected, Salt Bath Nitride finish) with mid-length gas system for smooth, soft recoil. The patented adjustable .625" low-profile gas block allows precise tuning across ammo types and setups (suppressed/unsuppressed), and the Streamline Carbon Fiber 15" M-LOK handguard provides exceptional rigidity with dramatic weight reduction. The lightweight Gunner BCG and ambidextrous charging handle complete the fast-handling package.
Light, fast, and competition-proven — the ION Series complete upper that feels like an extension of your will.
Who it’s for / not for
- Best for: Competition shooters (3-gun, PRS, tactical matches), dynamic training, lightweight defensive rifles, hunters or hikers wanting minimal carry weight with fast handling and muzzle control.
- Good match: Mil-spec AR-15 lowers, red-dot/low-power variable optics, setups needing tunable gas for varied ammo or suppressors.
- Not ideal for: Sustained full-auto or extreme high-heat/full-auto use (consider SOCOM profile), benchrest precision where maximum rigidity is priority.
Key features
- 16" Pencil Profile Barrel (Threaded) — ultra-lightweight design for speed and reduced fatigue, threaded 1/2x28
- Faxon Slim 3-Port Muzzle Brake — effective recoil reduction and muzzle rise control for flatter follow-up shots
- 4150 CMV Steel • Salt Bath Nitride — exceptional durability, corrosion resistance, easy cleaning
- 1:8 Twist Rate — stabilizes popular 55–77 gr 5.56 loads
- Mid-Length Gas System + Patented Adjustable Gas Block — smoother recoil, tunable for suppressed/unsuppressed or ammo variations
- 15" Carbon Fiber M-LOK Handguard — extreme weight savings with high rigidity and modular mounting
- Faxon Gunner Lightweight 5.56 BCG — keeps the entire system moving fast and reliable
- Ambidextrous Charging Handle — fast, confident manipulation from either side
- 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)
These links help buyers validate compatibility, upgrade paths, and replacement parts.
| Component | Faxon Part |
|---|---|
| Upper Receiver | FAXON ENHANCED FORGED AR15 UPPER RECEIVER - STRIPPED W/COMPLETION KIT |
| Barrel | FAXON ION SERIES 16" THREADED PENCIL PROFILE MID-LENGTH 5.56 NATO AR15 BARREL |
| Muzzle Device | FAXON SLIM 3-PORT MUZZLE BRAKE 1/2X28 - 5.56 |
| Handguard | FAXON STREAMLINE CARBON FIBER M-LOK 15" AR15 HANDGUARD |
| Gas Block | FAXON PATENTED ADJUSTABLE .625" 3-SCREW LOW PROFILE GAS BLOCK |
| Gas Tube | FAXON MID-LENGTH STAINLESS STEEL AR GAS TUBE |
| Bolt Carrier Group | FAXON GUNNER LIGHTWEIGHT 5.56 BOLT CARRIER GROUP - NITRIDE |
| Charging Handle | Faxon Ambidextrous Charging Handle |
Quick specs summary: Complete 16" 5.56 NATO ION Series Threaded Pencil upper — 4150 CMV Salt Bath Nitride pencil barrel (1:8 twist, mid-length gas, threaded 1/2x28), Slim 3-Port Muzzle Brake, patented adjustable .625" gas block, 15" Carbon Fiber M-LOK handguard, Gunner Lightweight BCG, ambidextrous charging handle. Ultra-light, fast-handling, competition-ready. Made by Faxon Firearms in Greater Cincinnati, Ohio.
FAQs
Is this a complete upper ready to install?▾
Yes—this is a complete upper assembly including the Faxon Enhanced Forged Upper, barrel, Slim 3-Port Muzzle Brake, carbon fiber handguard, adjustable gas block, lightweight Gunner BCG, and ambidextrous charging handle. Just mount to your lower receiver.
What does the Slim 3-Port Muzzle Brake do?▾
The Faxon Slim 3-Port Muzzle Brake significantly reduces recoil and muzzle rise for flatter shooting and faster follow-up shots — ideal for competition and dynamic training where control is critical.
Where is this upper manufactured?▾
100% made in the USA — barrel, machining, and final assembly all performed by Faxon Firearms in Greater Cincinnati, Ohio.
What makes the ION Series different?▾
ION Series prioritizes extreme weight savings with premium components (carbon fiber handguard, lightweight BCG, pencil barrel) while maintaining Faxon reliability and tunability (adjustable gas block) — perfect for competition, dynamic training, or lightweight defensive builds.
What’s the advantage of the pencil profile?▾
The slim pencil contour dramatically reduces front-end weight for faster handling, quicker transitions, and less fatigue — ideal for competition or any application where speed and balance are critical, while still delivering good velocity and harmonics.
What warranty covers this upper?▾
Faxon Firearms Limited Lifetime Warranty. Full details, terms, and service information available at:
https://faxonfirearms.com/warranty-privacy-terms/
Faxon Firearms products are backed by the Faxon Lifetime Guarantee to the original purchaser against defects in materials and workmanship. Full terms, exclusions, and RMA instructions: https://faxonfirearms.com/warranty-privacy-terms/
- Caliber:
- 5.56 NATO
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