Expo Arms M-LOK Barrier Stopping Device

Manufactured by Expo Arms
Manufactured by Expo Arms
4 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The Expo Arms M-LOK Barrier Stopping Device features a light weight and minimalist design that helps to improve the ergonomics of your rifle. Perfect for slim M-LOK handguards, the BSD allows you to achieve better stability when firing your rifle by pressing it against a barrier. It only takes up one slot and can also be used as a handstop to prevent your hand from sliding forward especially on short barrel firearms. Additionally, you can use it to mitigate muzzle climb when firing off hand by pulling back against it like an angled foregrip. Machined from aluminum and hardcoat anodized black for additional corrosion resistance.

  • Machined from aluminum
  • Black hardcoat anodized
  • Slim and low profile
  • M-LOK attachment
Expo Arms offers top-quality MIL-SPEC AR-15 components at rock bottom prices. Made in the U.S.A. and covered by Expo’s Limited Lifetime Warranty against manufacturer defects, material or workmanship problems, and even normal wear and tear.
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BrandExpo Arms
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

4 reviews

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Works Great!

by -

This hand stop is well worth the money. It's not too big or too small, and fits my grip style as I need it to. The fact that it's made of aluminum is a big plus. Most other products that are comparable to this Expo Arms hand stop are almost double, if not more, the price. Pick one up, you won't be disappointed.

Simple and solid.


Height is 34mm. Machining and finish is solid. Logos are hidden, which is preferable. Glad I went with this one over the similar polymer options from BCM/Strike.

High quality, aluminum so gets hot

by -

Bought it for the Gucci factor. I prefer polymer accessories on handguard to reduce heat to my hands so maybe I'll sell my BSD to a friend

The game changer

by -

EVERYBODY is SLEEPING on these!!!!
I sold my Railscales Anchor and replaced it with something $110 cheaper! I love it and can’t say enough about the simplicity and functionality of this barricade/handstop. They will go on every gun I build PERIOD! We spend enough on quality parts…. save you some right here!