FAXON ION-X HYPERLITE 16" 5.56 AR15 RIFLE
The Faxon ION-X Hyperlite 16" 5.56 AR15 Rifle is the most affordable production ultralight AR15 on the market, weighing in at just 4.93 lbs. Part of Faxon's ION Line, the ION-X is purpose-built for competitive shooters, action-gun athletes, and anyone who wants the responsive handling and soft recoil of a finely tuned lightweight rifle—without paying boutique pricing. From the factory, every ION-X ships with a stack of out-of-the-box upgrades that would otherwise require a separate parts list and an afternoon at the bench.
At the heart of this build is the Faxon 16" 5.56 NATO Pencil Profile Barrel with 1/2x28 threading, paired with our slim 3-port muzzle brake for sharp recoil mitigation and faster follow-up shots. The brake's compact profile is engineered to clear the gas block and barrel nut, so you can pull either component for service without removing the muzzle device. The rifle is finished off with the Faxon X-Tra Lite Forged Receiver Set in Type III hard coat anodize, the Faxon Gunner Lightweight M16 BCG with Superfinish, our multi-position adjustable gas block for tuning suppressed or unsuppressed, and the Faxon Enhanced Match Trigger by Schmid® for crisp, consistent breaks under speed.
Key Features
- Total rifle weight: 4.93 lbs — the most affordable production ultralight AR15 in its class
- 16" 5.56 NATO Pencil Profile Barrel — 1/2x28 threaded, suppressor-ready, optimized for low overall mass without sacrificing accuracy
- Slim 3-Port Muzzle Brake — sharp recoil mitigation; compact profile clears the gas block and barrel nut so the brake stays on during service
- Faxon X-Tra Lite Forged Receiver Set with tensioning screw — 7075-T6 forged aluminum in Type III hard coat anodize, skeletonized Picatinny rail with engraved T-marks, "X" logo aesthetic milling, and skeletonized magwell for further mass reduction (.96 lbs as a set, including ejection port cover)
- Faxon Gunner Lightweight M16 BCG with Superfinish for reduced reciprocating mass and smoother cycling
- 13" Carbon Fiber M-LOK® Handguard — high strength at a fraction of the weight of comparable aluminum handguards
- Multi-Position Adjustable Gas Block — tune cycling for suppressed or unsuppressed setups
- Faxon Enhanced Match Trigger by Schmid® — crisp, precise pull for confident shot placement under competition or training pace
- Ambidextrous Charging Handle
- Ambidextrous Safety Selector
- MFT Minimalist Stock (or similar ultralight configuration)
- B5 Grip (or similar ergonomic grip)
- Mid-Length Gas System
- Each rifle is individually test-fired and tuned with factory-new 55gr 5.56 NATO ammunition before shipping
Use Cases
- Competition and action shooting: sub-5-lb weight, soft-shooting recoil, and a factory-tuned trigger make for fast transitions, quick splits, and confident hits at speed
- Training and high round-count range days: tuned gas system and lightweight reciprocating mass keep the rifle smooth and easy to drive over long sessions
- Defensive and patrol use: ultralight handling helps in tight spaces and during extended carry, with the X-Tra Lite receiver set keeping overall mass to a minimum
Who it’s for: shooters who want a no-compromise lightweight AR15 with factory-tuned components—competitors stepping up from a stock build, instructors logging high round counts, or anyone who values the soft recoil and responsive feel of a properly tuned ultralight.
Who it’s not for: heavy-barrel precision shooters or shooters who prioritize maximum durability under sustained automatic fire—pencil profile barrels are optimized for weight and accuracy, not extended high-volume duty cycles.
About the Faxon X-Tra Lite Receiver Set
The X-Tra Lite Receiver Set is what makes the ION-X live up to its name. Faxon took the fan-favorite forged receiver set and refined the design to reduce mass without sacrificing strength or fit. Highlights include:
- .96 lbs total weight (with ejection port/dust cover) — 2.08 ounces lighter than the standard Faxon forged receiver set
- Trued by Faxon at our Greater Cincinnati, Ohio facility
- Honed inner bore to smooth the action of the bolt carrier group
- Deleted forward assist for further mass reduction
- Skeletonized Picatinny rail with manually engraved T-marks (visible after any coating)
- Tighter tolerance on lugs for a better upper/lower fit
- Aesthetic "X" milling on the upper—Faxon's heritage logo, machined to remove material and reduce mass
- Skeletonized "X" magwell for additional mass reduction
- Material: 7075-T6 Forged Aluminum
- Finish: Type III Hard Coat Anodize
What’s In This Build (Bill of Materials)
- Receiver Set: Faxon X-Tra Lite Forged AR15 Receiver Set w/ Tensioning Screw — 7075-T6 Forged Aluminum, Type III Hard Coat Anodize
- Barrel: Faxon 16" 5.56 NATO Pencil Profile Barrel, 1/2x28 Threaded
- Muzzle Device: Faxon Slim 3-Port Muzzle Brake
- Handguard: Faxon 13" Carbon Fiber M-LOK® Handguard
- Gas Block: Multi-Position Adjustable Gas Block
- Gas Tube: Mid-Length Stainless Steel
- BCG: Faxon Gunner Lightweight M16 BCG with Superfinish
- Charging Handle: Ambidextrous Charging Handle
- Safety: Ambidextrous Safety Selector
- Trigger: Faxon Enhanced Match Trigger by Schmid®
- Stock: MFT Minimalist Stock (or similar ultralight configuration)
- Grip: B5 Grip (or similar ergonomic grip)
- Buffer: Carbine buffer system tuned for the ION-X gas profile
Explore Related
Warranty
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
Resources
Click here for product manuals
FAQs
What makes the X-Tra Lite Receiver Set different from a standard forged set?▾
The X-Tra Lite set is built from the same 7075-T6 forged aluminum as our standard receivers but is refined for mass reduction: skeletonized Picatinny rail with engraved T-marks, deleted forward assist, "X" logo aesthetic milling on the upper, and a skeletonized "X" magwell. The complete set weighs just .96 lbs (including ejection port cover)—about 2.08 ounces lighter than our standard forged set. It's also Faxon-trued, with a honed inner bore for smoother BCG action and tighter lug tolerances for a better upper/lower fit. The set is finished in Type III hard coat anodize.
Why a pencil profile barrel?▾
Pencil profile barrels were originally developed for the M16A1 because they offer the best balance of weight and accuracy for general-purpose use. On the ION-X, the pencil profile is the single biggest contributor to the rifle's sub-5-lb weight, and Faxon's process control keeps the bore concentric and the harmonics consistent. The result is a rifle that handles like a carbine and shoots like a 16" precision build.
How does the slim 3-port muzzle brake design help during service?▾
The slim profile of the brake is engineered so that it clears the gas block and barrel nut. That means you can remove the gas block or barrel nut for cleaning, swapping, or service without first removing the muzzle device—saving time and keeping your timing alignment intact.
Can I shoot both .223 Remington and 5.56 NATO?▾
Yes. The barrel is chambered in 5.56 NATO, which safely supports both 5.56 NATO and .223 Remington ammunition.
Is the rifle suppressor-ready?▾
Yes. The 1/2x28 threaded muzzle accepts industry-standard 5.56 suppressors and suppressor mounts (the slim 3-port brake can be removed and replaced with a HUB-compatible mount or direct-thread suppressor). The multi-position adjustable gas block lets you tune cycling for suppressed use to manage gas to the shooter and reduce wear on the rifle.
Is each rifle test-fired before shipping?▾
Yes. Every ION-X is individually test-fired and gas-tuned with factory-new 55gr 5.56 NATO ammunition before it leaves our facility.
Where is this rifle made?▾
The ION-X is machined and assembled in-house at Faxon Firearms in Greater Cincinnati, Ohio.
What warranty applies?▾
All Faxon Firearms products are backed by our Lifetime Guarantee.
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
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