Aero Precision AR15 Atlas S-One 9″ M-LOK Handguard – Black

(20 customer reviews)

$119.99 $110.49

1 in stock


The ATLAS S-ONE is the newest addition to the Aero Precision Handguard lineup. Machined from 6061-T6 Aluminum, the S-ONE line of handguards are designed with size and weight in mind, providing the perfect handguard for your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Available in KeyMod™ and M-LOK® profiles with 9″, 12” and 15” options (7”  options coming soon).


The new Aero Taper Lock Attachment System (ATLAS) is both functional and aesthetically pleasing. It features 2 mirrored tapered locking nuts that provide evenly distributed clamping pressure across a custom engineered barrel nut with use of a turnbuckle screw. A ratcheting detent further secures the design while providing positive registration during installation. By design, the even pressure of the ATLAS system avoids distortion of the handguard often seen with current applications during installation.

All hardware mounting parts are included with the purchase of a S-ONE Handguard.

Lightweight By Design

  • KeyMod Handguard Weights: 7” – 4.76 oz, 9” – 5.34 oz, 12” – 6.81 oz, 15” – 7.69 oz
  • M-LOK Handguard Weights: 7” – 4.86 oz, 9” – 5.47 oz, 12” – 7.00 oz, 15” – 7.95 oz
  • Mounting Hardware Weight: 4.72 oz (same across all S-ONE Handguard options)


  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Compatible with low profile gas blocks
  • 1.3” Inside diameter
  • 1.5” Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

The ATLAS S-ONE Handguards are designed to match seamlessly with the custom designed top rail of our AR15 Gen 2 Upper.

Additional information

Weight 1.25 lbs
Dimensions 18 × 4 × 4 in

20 reviews for Aero Precision AR15 Atlas S-One 9″ M-LOK Handguard – Black

  1. pro_2a (verified owner)

    Perfect! I needed a handguard for a 10″ sbr and this fits perfect, it goes right up to 1/4″ from the threads. With the suppressor on it looks awesome.

  2. Jason W. (verified owner)

    Absolutely a great product at the best price anywhere. It was easy to install and looks/feels great.

  3. Robert T. (verified owner)

    Rail is a little longer than 9″ but that’s not really issue. It matched up perfectly with my M4E1 receiver set. Aero makes great products and is my usual go to for equipment.

  4. Anonymous (verified owner)

    I like

  5. jstarcher06 (verified owner)

    This handguard is perfect. The exact length, profile, and design i have been wanting for my latest build. Props to B. King as well. Order shipped the same day I purchased! Will be doing business with this team again.

  6. Philip Olegario (verified owner)

    This is by far the lightest and smallest (diameter wise) handguard I have ever bought. Wrapping your hands around this handguard for weapon manipulation makes it easy. If you’re like me and like to keep it simple with the attachments with just a flashlight and maybe a vertical grip to keep your weapon light, this is the handguard for you. I love this new handguard and will definitely will buy again! Thanks B. King’s for the fast shipping!

  7. Dennis Anderson (verified owner)

    Best price out there. This is also the best foregrip I have used so far. Light weight and excellent Finnish.

  8. Josh (verified owner)

    Just what I needed. Excellent price and service!

  9. Steve Sullivan (verified owner)

    Got it quick. Best price I found

  10. Todd (verified owner)

    Best service on great products. Aero hand gaurd is build to last.

  11. chris redman (verified owner)

    Very lightweight and solidly built. Easy installation and ergonomics are great. Comes with barrel nut and all pieces needed. Matches up seamlessly to aero upper.

  12. Brian M. (verified owner)

    Awesome handguard, B.Kings had the best price. Were on backorder when I ordered it, but shipped to me the day they received them. Very satisfied.

  13. Trent (verified owner)

    Aero knocks it out of the park again!

  14. James Mcmillan (verified owner)

    Wonderful product super light weight

  15. Kyle (verified owner)

    I love this site so much. I run a small business building custom rifles and B.Kings has made my business so much easier. From cerakoted to plain parts, it’s a one stop shop!

  16. Paul LaPrevotte (verified owner)

    great customer service

  17. John M. (verified owner)

    Great price, great value, great product

  18. Russell B. (verified owner)

    The Aero handgaurd is very nice. Very slim and fits my hand well. As always, service from B Kings was superb.

  19. andrew.edgington (verified owner)

    This hand guard is awesome looking and very lightweight. I couldn’t be happier. Also at this price, I couldn’t pass it up. B.kingsfireas shipped out the next day. And shipping is cheap.

  20. Chris Kohnke (verified owner)

    Awesome job. Thanks guys. You rock !

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