Foxtrot Mike Products Ultra Light Free Float Primary Arms Exclusive M-LOK Handguard - 10.5"

Manufactured by Foxtrot Mike Products
SKU: PA-5.56-10.5ULHG
MPN: PA-5.56-10.5ULHG
Manufactured by Foxtrot Mike Products
3 Reviews

Out of Stock

NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.



This Foxtrot Mike Products Ultra Light Free Float Handguard is a Primary Arms Exclusive. It features a slim profile with M-LOK attachment points along the full 10.5” in length as well as on the diagonal angles allowing for more variety when attaching accessories. It is machined from 6061-T6 aluminum and has a type III hardcoat anodized finish for excellent corrosion resistance. This AR-15 free float handguard is compatible with all Mil-Spec upper receivers and most low-profile gas blocks, so you have the freedom to build your rifle the way that you want. It is easy to install with the included proprietary barrel nut and eight hardened steel screws to ensure that it won’t loosen over time. This M-LOK handguard also has a full length picatinny top rail that mounts flush with M4 flat top upper receivers to give you more mounting space for scopes, red dots and iron sights. If you are looking to upgrade your current SBR, pistol, or build a new one, you can’t go wrong with this Primary Arms Exclusive FM products AR-15 handguard.

  • M-LOK compatible on all seven sides for lights, grips, bipods, and other accessories
  • Single piece free float design that is lightweight and durable
  • Machined from 6061-T6 aluminum
  • Mil-Spec hardcoat anodized black
  • Light and slim profile for increased ergonomics and comfort
  • Includes proprietary barrel nut
  • Full length picatinny top rail
  • Barrel nut requires 1 3/16 wrench (30 MM)
  • Made in the U.S.A.

Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available.
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Accessory AttachmentM-LOK
FinishHardcoat Anodized
Gas System LengthCarbine
Handguard Length10.50 in
MaterialAluminum - 6061-T6

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews

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Total garbage product. And a bad design on top.

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Speaking as an engineer, this product is absolutely one of the worst designs I have ever seen. The barrel nut and handguard must mate on a set of 16 flats to align the nut with the hexagonal shaped handguard retaining screw flats, after the nut is torqued to mil-spec tolerances (30-80 ft.-lbs.). Over 80 is excessive. Four Spacers are provided for some leeway when torqueing the nut. The handguard is designed to slide over the nut. NOT on my set. Polishing and filing was necessary before even an EXTREMELY tight fit was possible on just a few of the flat positions. When I thought I had a position where the set-up would allow final torqueing, I torqued down to 60 ft.-lbs.; at which point the barrel nut broke in half! I normally use 50-60 ft.-lbs. on new AR builds, of which I have done several. Bad design and bad execution. I'll look to a different manufacturer and design for a replacement.

great product


great handguard installed on my 7.62x39 16in. barrel took out yesterday an loved it the mounting system works great along with blue Loctite just in case had 15in. before this one much lighter great product and pricing and fast shipping I am in ca. once processed less than a week

Useless company

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Absolute GARBAGE!!! And that’s being generous... wanted a cheap rail but not too cheap and what a waste of money I’ve bought grid defense rails that are 1000x better then this trash... waste of money waste of time absolute disgrace of a company, buying a cloud defense rail now but better off shooting with no rail holding the barrel less pain then buying this and being aggravated
<br>From PA: We're very sorry that you had this experience with this product and we'd be happy to accept a return.