Expo Arms® M-LOK AR-15 Handguard - Black - 13"

Manufactured by Expo Arms
Manufactured by Expo Arms
27 Reviews

In Stock

Orders of non-FFL items will ship within 1 business day. FFL orders will ship within 5 business days if transfer details are provided.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details



The Expo Arms® Handguards are machined from high-quality 6061-T6 aluminum bar stock, allowing for a slim profile with plenty of M-LOK slots for attaching grips, lights, and other accessories. This is a free float handguard that comes with a 6061-T6 aluminum barrel nut and anti-rotation tabs for an extremely strong lock up that will hold tight on any Mil-Spec receiver. At 13” in length, this M-LOK handguard will run great on any 16” AR-15s and has plenty of internal diameter for compatibility with low profile gas blocks. This Expo Arms Handguard is great for a new build or simply upgrading an old AR. Get yours today only at Primary Arms.


  • Black Hardcoat Anodized
  • Full M-LOK Compatibility (7 sides)
  • Anti-Rotation Tabs
  • 6061 Aluminum Construction
  • 6061 Aluminum Barrel Nut
  • Slim Profile Design
  • Compatible with all MIL-SPEC upper receivers
  • Weight: 10.8 ounces
See More


Accessory AttachmentM-LOK
BrandExpo Arms
FinishHardcoat Anodized
Gas System LengthExtended Rifle
Handguard Length13
Inner Diameter1.35 in
MaterialAluminum - 6061-T6
Weight10.8 oz.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

27 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Good handguard with design flaw

by -

It’s a good handguard but the sharp pointy design scratches the upper during installation. They should had design it without that pointy part.

Very nice

by -

The finish work was really nice and it went on my upper very easy and lined up perfectly with the rail on the receiver. I really like how the hand guard attaches to the included barrel nut. Very solid!

Buy with confidence


Received this 13” hand guard and couldn’t be happier! Fit and looks great!

Sexy and slim, how I like my women.

by -

Great price, has anti rotation tabs which are good to have as well as mLok slots basically any direction, stoopid light and doesn't have their logo in white. Excellent handgaurd

nice finish

by -

handguard seems well made. locking nut did not fit completely but it did lock down tight. should be ok. good buy for the money.

Solid rail

by -

I was looking for a slim line mlok 13" hand guard. I'm pretty impressed its light weight and locks up nice and tight. Thank You.

Love it some more

by -

Can't go wrong!

Excellent design, finish and feel


(Expo Arms 13" Handguard)

Out of all the handguards/rails that I've installed, this one has been the most surprising. (In a great way) Below I have outlined my pros and cons:

* Lightweight
* Excellent machining. Very smooth edges, and no blemishes or tooling marks anywhere. This is one of the most comfortable handguards I own.
* Outstanding finish. No scratches or inconsistencies anywhere.
* Very secure lockup system using three socket head cap screws, one of which engages with the barrel nut. (No timing required for this screw to engage properly)
* No timing required for gas tube installation.
* Anti rotation tabs ensure an easy, and secure mating to the upper receiver.

* Does not include a barrel nut wrench. You'll need a 1 3/16 crows foot.

These handguards are a good value at regular price, but their outstanding if you can get them on sale. Buy with confidence.


by -

Looks good. Locks up tight. Feels great in the hand. Zero complaints.

Expo handguard


I am really impressed with this. I like the feel, the lightweight and finish is great and mostly I am impressed with the lockup system. Superior to anything I have seen before. And of course Primary Arms great customer service! Ordered it Friday and wasn at my front door on Monday. You guys Rock!