AR15 ATLAS S-ONE KeyMod Handguard

Aero Precision AR15 ATLAS S-ONE KeyMod Handguard

AR15 ATLAS S-ONE KeyMod Handguard Product Sku: APPG500001

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 7", 9", 12" and 15" options.


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 an ATLAS 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

ATLAS Handguards are designed to match seamlessly with our M4E1 Threaded Upper Receivers. Additionally, they are compatible with any Mil-Spec AR-15 upper receivers as well. However, they may not be compatible with billet upper receivers due to indexing tabs. Save when you buy them as a combo.

Please note: The ATLAS handguards are NOT compatible with our M4E1 Enhanced Upper Receiver.

Need help installing your ATLAS Handguard? Check out our instructional video...

Made In America? Yes
Platform AR15
Series ATLAS
Attachment Type KeyMod
Material Machined from 6061-T6 aluminum
Actual Handguard Lengths 7" - 7.25", 9" - 9.19", 12" - 12.56", 15" - 14.94"

Aero Precision rail lengths measure from end to end. This is the point of contact at the receiver to the end of the last picatinny slot at the muzzle.
Weight(s) 7" - 4.76 oz / 9" - 5.34 oz / 12" - 6.81 oz / 15" - 7.69 oz
Other - Mounting Hardware Weight: 4.72 oz
- Instructional video

Customer Reviews

4 Item(s)

Fitment is amazing! Review by Marcos
Love it, for this price best handguard on the market! (Posted on 7/30/2018)
Excellent handguard but be aware.......... Review by Benjamin
I have now built 3 rifles using Aero Precision uppers and lowers. I have always found them to be great quality at a great price. This handguard is no different. Excellent quality. Excellent price. Solid construction and light weight. Installs solid. The only issue I have with it is that the removed top chokes down the available space and some adjustable low profile gas blocks won't fit. I installed this over a JP Enterprises adjustable gas block and there wasn't enough room for the clamp screws. I had to file off a corner off the clamp screw heads to make it fit. Looks like this could be a problem with a few other clamp-on adjustable blocks like Odin Works, etc. It shouldn't be an issue with most set screw or pinned low profile blocks, though.

I still gave it 5 stars all the way around because it really is an excellent product, just make sure you're not going to have fitment issues with your particular gas block. (Posted on 3/20/2018)
awesome Review by David
I bought this handguard to finish up my 3 Gun rifle and man this thing is awesome install was a cake walk and haven't had any problems with it. (Posted on 12/28/2017)
My new favorite handguard!! Review by Kevin
When I pulled it out of the box, I looked at the mount hardware WTF!?! Then I watched the AERO install video...this went on EASY! And it's ROCK SOLID! Fit, finish and quality is typical of everything I've ever ordered from AERO..flawless. (Posted on 12/14/2017)

4 Item(s)

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Finish Your Build