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

Manufactured by Expo Arms
Manufactured by Expo Arms
27 Reviews

Out of Stock

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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
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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
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by -

I was just looking for an inexpensive rail made in the USA. This rail surprised me with the quality. Beats out several of the higher priced rails out there. Very sturdy and good fit. No special tools needed.

Budget hand guard

by -

For the price a very good hand guard, i wanted to spend my money on other stuff for the AR,there are more out there that is better. I spent the extra money on a better bolt and trigger.

Quality at a fair price.

by -

This handguard is very well made, clean with a good finish. The mounting system is top notch and better in my opinion than some others that cost way more. Two things which could be improved though, no barrel nut wrench which is no biggie except you're not told that unless you read the reviews and most handguards do come with one. 1 3/16, Amazon, 9 bucks. Aldo if you want to install this correctly with proper torque you will need shims. Aero 8 pack used them all. Overall if read the reviews and planned ahead then a fantastic buy.

Solid for the money


I got this rail on sale and for less than $100 it feels solid. Lockup is nice and anti-rotation tabs. If you are worried about the aluminum barrel nut like I was, the STNGR V2 steel one fits this rail perfectly. Like $20 extra which makes this a great combo

Really good

by -

Nuff said. Great, simple, comfortable, strong, great machining, even locks to upper receiver to prevent misaligning. Great bang for the buck.

Excellent design, finish and feel

by -

(Expo Arms 13" Handguard)

**Just installed it today. After contacting PA to inquire about the proper torque spec for the handguard bolts (the box did not include these details)
they recommended 20 to 25 inch pounds, as well as thread locker.**

Of all the handguards that I've installed, this one has been the most surprising. See pros & cons below:

* 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 gas tube installation.
* Anti rotation tabs ensure an easy, and secure mating to the upper receiver.

* No barrel nut wrench. You'll need a 1 3/16" crows foot. No torque specs for the bolts.

These handguards are a great value. Buy with confidence.

Birthday gift

by -

Looks good better then my quad rail have not had it installed yet but I like