Aero Precision AR15 Atlas S-One 12″ M-LOK Handguard – Black

(25 customer reviews)

$129.99 $111.99

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SKU: APRA500104AC Categories: , ,


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 12” and 15” options (7” and 9” 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
Handguard Length and Type

Enhanced 7" M-LOK, Enhanced 9" M-LOK, Enhanced 12" M-LOK, Enhanced 15" M-LOK

ADD BAR Barrel Nut

NO, Yes

25 reviews for Aero Precision AR15 Atlas S-One 12″ M-LOK Handguard – Black

  1. Kevin Schmidt (verified owner)

    Too notch

  2. mchidlovsky (verified owner)

    this handguard is tits. feels perfect in the hand. my favorite handguard now. thanks for the awesome price!

  3. Jim (verified owner)

    Fantastic product @ a great price from B. King’s! Keep up the great work sir. Thanks!

  4. Jared L. (verified owner)

    Fast service. Handguard was as described. Very happy with it and the service overall.

  5. Scott (verified owner)

    Great product, but even better from a great company! Bk shipped it next day even with a couple days delay posted on the site! Couldnt be happier with the rail- super light weight and really easy to install! Dont hesitate to buy from bk!

  6. George (verified owner)

    Very slim and comfortable in hand. It matched my DSA lightweight upper nicely.
    Like it very much.
    I modified a Gun tech aluminum barrel nut.
    Very pleased

  7. Jason S. (verified owner)

    Great service, great product!!!!!

  8. Jeremy (verified owner)

    Fast shipping. Excellent Value. Quick to respond to emails and questions. Will continue to buy from Blake

  9. Robert P. (verified owner)

    Great price, quick response to questions, fast shipping on a great product. Would highly recommend them, and will continue to shop with in the future.

  10. troy H. (verified owner)

    Always always excellent customer service. This is a very comfortable, super light forend. It’s gas block channel is very small. Use micro gas block.

  11. Joseph J. (verified owner)

    Great lightweight free float Handguards. B Kings had it when most others were out of stock, and still competitive pricing and shipping. Very happy.

  12. mark s. (verified owner)

    Processing and delivery were quicker than expected. The handguard itself is beautifully machined. No sharp edges and it’s with the partial 1913 rail on top it’s feather light but still very strong. Install was a breeze with the unique torque screw method and fits perfect. 100% recommend this handguard and the price on B. King’s couldn’t be beat when I purchased.

  13. Melissa (verified owner)

    Good price got fast even though it was on backorder and looks great on the gun . Was exactly what I wanted. Good shopping experience.

  14. Eric Pierce (verified owner)

    great product, great purchase experience as always

  15. Brent M. (verified owner)

    Easy ordering, fast shipping, packaged well. I’m happy

  16. jdhigginsusmc (verified owner)

    These hanguards look fantastic! Have not installed them yet, but the finish and feel is top notch. B.King’s Shipped in a timely manner and had these at an excellent price, and also offer a military discount. Semper Fi!

  17. Jonathan Higgins (verified owner)

    Order this handguard, received the M5 Atlas, contacted b.king and had the correct one shipped to me very quickly! Great prices, and great service, even with a mix up, I would recommend doing business with them!

  18. Anonymous (verified owner)

    Fast shipping, exactly as described.

  19. Michael (verified owner)

    Good fast service

  20. Joseph J (verified owner)

    Top notch product, company and customer service..A++

  21. Anonymous (verified owner)

    Great transaction, fast shipping, love the handguard, slim and light, best price I could find!

  22. Ismael (verified owner)

    Great handguard, lightweight and easy to install!

  23. Benjamin (verified owner)

    looks Good

  24. Daniel B. (verified owner)

    Best mounting system I’ve seen. Solid lock up.

  25. Lance E. (verified owner)

    First time ordering parts and I am more than pleased with the products and the timely service. Will not be the last time I order from them. Highly recommended!!

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