Faxon Streamline Carbon Fiber 13" M-LOK Handguard

(10 reviews)
Current Stock:

Fusing Faxon's innovation and engineering with Lancer Systems' carbon fiber know-how, the STREAMLINE Carbon Fiber Handguard maximizes carbon fiber's unique rugged characteristics with practical application. The rail features 8 complete M-LOK facets for mounting accessories and uses standard AR-15 barrel nuts for mounting to the rifle, driving weight down, while maintaining decades-proven mounting systems.

Carbon fiber is 10x stronger than aluminum and 40% lighter. We created a carbon fiber handguard that is competition and duty ready, weighing in at only 7.99 ounces, with a steel barrel nut!

Already proven on champion competition rifles, the STREAMLINE Carbon Fiber Handguard is rugged and ready for anything a shooter can throw at it.


  • Extreme lightweight without sacrificing strength, rigidity, or practicality.
  • M-LOK attachment across 8 facets.
  • Dramatically increases maneuverability of the weapon over metal rails. 
  • Low heat transfer for handling extreme duty cycles. 
  • Fits common suppressors under-rail
  • Attaches with standard armorer's wrenches and tools.
  • Co-witness iron sights and optics/lasers*

*Requires optional low-profile M-LOK rail adapters. 



  • Length: 13.3"
  • Weight w/o Barrel Nut (Includes ALL Mounting Hardware): 6.12 Ounces 
  • Weight, Steel Barrel Nut: 1.28 Ounces
  • Weight, Titanium Barrel Nut: .77 Ounces
  • Height (Flat to Flat): 1.98"
  • Max Outer Diameter (Peak to Peak): 2.05"
  • Max Inner Diameter (Front Aluminum Ring):  1.70"
  • Construction: Lancer Carbon Fiber & Aerospace Aluminum - Type III Hard Anodized
  • Accessory Mounting: M-LOK
  • M-LOK Slots: 7
  • Attachment Method: Standard AR-15 Barrel Nut, Patent-Pending Clamp Architecture

 ALL Include:

  • Steel AR-15 Barrel Nut
  • STREAMLINE Carbon Fiber Rail
  • All Mounting Hardware



Carbon Fiber


  • 5
    Great Product

    Posted by Gary in Ohio on Apr 26th 2023

    Lightweight, strong and well made. The 13" is probably best on a 14.5 barrel.

  • 5
    Fantastic Handguard

    Posted by Kyle Arbogast on Jan 10th 2023

    I purchased this with the intention of doing a build with a suppressor inside of the handguard, and wanted to keep the weight down. This handguard worked perfectly for that. The suppressor fits nicely inside of the handguard, heat transfer is almost non-existant (did a 100rd mag dump to test this) with the carbon fiber, and the weight reduction of the handguard kept my weight down substantially with the suppressor out on the end.

  • 5
    Amazing handguard

    Posted by Tim on Jun 2nd 2022

    Very impressed with the manufacturing. The resin on the carbon fiber was properly done. The milling on the mlok slots were properly deburred; I couldn't find a single loose fray of carbon fiber. Very lightweight, yet at the same time has heft and sturdiness to it. I had a chance to compare this to the JAG carbon fiber handguard, and this one is definitely higher quality. Highly recommend as the best per cost carbon fiber handguard w/ mlok on the market today.

  • 5
    13” carbon fiber rail

    Posted by Justin Duquaine on Feb 17th 2022

    Best carbon fiber rail I have used. I have used 3 other brands and Faxon is the first that made me a repeat customer. Great design and quality.

  • 4

    Posted by Nicholas Hermosillo on Dec 24th 2021

    Super clean lines and design. Genuine carbon fiber that feels incredible in the hand. Smooth octagonal handguard that feels strong, almost alien. Wish there was a qd mount option.

  • 5

    Posted by Ohler Marc on Aug 18th 2020

    Beautiful workmanship !!! Looks like artwork !!!

  • 4
    Carbon fiber handguard

    Posted by Dpc on Jul 27th 2020

    Have purchased several of these for light weight AR builds. Great product that combines strength and light weight. When looking at other options there is simply no other product on the market that can provide the strength and rigidity with the significant weight reduction offered by this product. Well done!!!

  • 5
    13" carbon fiber handguard

    Posted by Nicholas Geremino on Jan 6th 2018

    Very well made, looks and feels great, very light it is a perfect addition to my build, Thank you Taxon keep up the good work

  • 5
    Initial impressions

    Posted by Heinrich Soltow on Oct 24th 2017

    My initial impressions so far: A) It's light. Its very light for what it appears to be. Picking it up you'll be pleasantly surprised at how light it is compared to how heavy it appears to be. B) It's a bit beefier/sturdier/larger than what the photos online show. I've got average sized hands and this handguard offers a full grip. C) For the most part it completely covers the gas tube, which can get pretty hot. It's a big bonus. I had a Brigand Arms handguard but I sold it as my gas tube got really hot and it offered no protection from that. D) The M-Lok slots are very solid. E) The clamp on system is very solid. There's no wobble or other defects. Best part is it uses a standard GI barrel nut. I highly recommend buying a V7 titanium barrel nut to cut the weight even further. If you can't order it from here just get it from V7's website, the handguard and barrel nut will arrive at about the same time.