Aero Precision ATLAS S-ONE M-LOK AR-15 Handguard Black - 12"

Manufactured by Aero Precision
SKU: APRA500104A
MPN: APRA500104A
Manufactured by Aero Precision
7 Reviews

In Stock

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Aero Precision’s S-ONE line of handguards have been designed with size and weight savings in mind, delivering the perfect handguard for your lightweight build. The Aero Taper Lock Attachment System (ATLAS) is a durable and dependable mounting platform, maintaining a slim profile while providing strength and stability. It features two mirrored, tapered, locking nuts that provide evenly distributed clamping pressure across a custom engineered barrel nut using 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 commonly seen using other mounting systems.

NOTE: ATLAS S-ONE Handguards are not compatible with the Aero Precision M4E1 Enhanced Upper Receiver.

  • Compatible with MIL-SPEC AR-15 upper receivers and barrels
  • 6061-T6 aluminum
  • Front and rear picatinny rail
  • Center portion of top rail eliminated for weight reduction
  • Indexing grooves in 12 o’clock position for positive grip control
  • Low profile gas block compatible
  • 1.3” Inside diameter
  • 1.5” Outside diameter
  • Mounting hardware weight: 4.72 oz
  • Includes barrel nut
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Accessory AttachmentM-LOK
BrandAero Precision
FinishHardcoat Anodized
Gas System LengthRifle
Handguard Length12.5 in
Inner Diameter1.30 in
MaterialAluminum - 6061-T6
Weight11.72 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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

Ratings & Reviews

7 reviews


So close and yet so far


This would be my favorite handguard if it weren't for the "pig of a barrel nut". The barrel nut is just this huge lump of steel that adds more weight to the unit than is necessary. It's like Aero Precision spent so much R&D time on the handguard itself that they just didn't have it in the budget to look at the barrel nut. WHAT A SHAME! So close Aero. You blew it. <br><br>I still bought two of these and am thinking about buying another- then I am going to machine my own barrel nuts to make up where Aero fell short. So sad.

Light, easy to install, great Aero quality...


Great rail. Rigid but light. Just be honest with yourself with the interrupted top rail. The front sight section is large enough for Magpul pro’s or a fixed sight, but that’s it. Great for uppers with LPVO. Easy to install, shims included.

Love the Atlas S-ONE M-LOK handguard!


No idea what the previous poster is talking about ... the barrel nut for the Atlas S-ONE M-LOK handguards are light as heck. Mine rocks. I really like the proprietary attachment system as well. Will most certainly order again.

Not actually 12".....


I was so excited to complete my 12.5 Grendel with this hand guard after handling a longer one at a gun show recently.
<br>Come to find out, this thing is actually 12.56" instead of 12"
<br>With the internal diameter being so slim, which is what I wanted, I can't get a can on my Griffin linear comp. Now I'm stuck with either buying a new, less slim or shorter hand guard or having a custom adapter made to mount a can.
<br>They need to label this thing properly. Either call it a 12.5 or a 13...

Fantastic Aero Precision quality


Previous review mentioned they were upset at the overall length, well if you do your due diligence as any wise consumer should, it specifically states that the length is 12.5"...don't complain about something that is your own fault in not researching. As for the handguard itself, it's beautiful, lightweight, strong and very well made, just like all Aero Precision products!

Bad ass


They waited to long now we are in the clear they bring them out to late

Great product

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Lightweight feels good in the hand will get another for .450