MPN: APRA538704A / APRA538705A / APRA538714A / APRA538715A


  • One-piece free float design
  • Full top Picatinny rail for optional attachments
  • M-LOK slots at 3, 6, and 9 o'clock positions
  • Compatible with most low-profile gas blocks
  • Quick disconnect sling socket at the 3, 6 and 9 o’clock positions


  • Material: 6061-T6 Aluminum
  • Finish: Black Hard Anodize
  • Actual Length (When Installed):
    • 12-Inch: 12.56"
    • 15-Inch: 14.94"
  • Weight:
    • 12-Inch: 8.79 oz.
    • 15-Inch: 10.16 oz.
    • Mounting Hardware: 4.72 oz.
  • Inside Diameter:
    • Height: 1.65"
    • Width: 1.3"
  • Outside Diameter:
    • Height: 1.95"
    • Width: 1.51"


  • Aero Precision M5 Threaded Upper Receivers and most AR-10 upper receivers

**The M5 ATLAS R-ONE M-LOK Handguards are NOT compatible with Aero Precision M5E1 Enhanced Upper Receivers.

**The M5 ATLAS R-ONE M-LOK Handguards may NOT compatible with some AR-10 billet upper receivers due to indexing tabs.


  • 1x Aero Precision M5 ATLAS S-ONE M-LOK Handguard
  • 1x Barrel Nut
  • 1x Mounting Hardware Kit


If you’re looking for the perfect free-floating Handguard for that new build or to upgrade your existing platform, this one is definitely worth a long look. Aero Precision has designed another winner with their Aero Precision M5 ATLAS R-ONE M-LOK Handguard. It’s the latest rail to hit the market in 2018, it’s priced right and gives all the others a run for their money.

Gun Be Nimble. Gun Be Quick.

The ATLAS M5 R-ONE M-LOK Rail System has the perfect profile and weight for your lightweight build. However, even if that’s not your bag, the slim profile of this Handguard will make your rifle feel more nimble and faster getting on target. The Aero M5 ATLAS R-ONE M-LOK Handguard will definitely take your rifle to the next level. Also, if you’ve messed around with older free-floating rail systems, they can be a little tricky to attach right. The proprietary Aero Taper Lock Attachment System (ATLAS) solves that problem. A special barrel nut, wrench, mirrored lock-nuts and a wild turnbuckle screw brings everything together straight as an arrow and locked down tight.

Things Have Really Changed

Since the free-floating rail systems appeared, the firearms industry has grown tremendously. Materials have improved, quality has grown, and leading the way Aero Precision has never failed to improve. Their latest improvement is finally here with the ATLAS M5 R-ONE M-LOK Rail System. They changed just a bit over its older brother the ATLAS R-ONE. The one obvious change is a full-length Picatinny rail on top. That gives you more options in mounting accessories, for their still a lot of Picatinny mounted toys around. However, you still get the stability and versatility of tons of M-LOK mounting slots.

Have a question?

Ask an Expert

Reviews (5)

  • Aeropresicion Handguar

    Posted by CHRISTIAN FELICIANO on 1st Apr 2022

    Excellent product , Excellent seller, item looks great A+

  • Excellent handguard

    Posted by Zach Pitzler on 11th Sep 2019

    The handguard was flawless. Very light, seems strong, smooth edges and easy to install.

  • Awesome rail but...

    Posted by Nathan Foster on 18th May 2019

    Received this in the mail today and was expecting a pretty straight forward install but no instructions were provided so after googling the torque spec for the barrel nut I found Aero’s install instructions which stated “use provided shims if needed”, none were provided either. After torquing and loosing the barrel nut in order to get the rail locking device to finally work, 30 minutes or so could’ve been saved by having instructions and shims. All in all it’s a great rail and I will probably buy more in the future. Thanks Wing Tactical for the fast shipping and product availability.

Customers Also Viewed