Aero Precision M5 12.7" ATLAS S-ONE Builder's Set - FDE Cerakote

SKU: APSC500215

Original price was: $760.00.Current price is: $535.57.

In Stock

In stock



Aero Precision M5 12.7″ ATLAS S-ONE Builder’s Set – FDE Cerakote

Aero Precision M5 ATLAS S-ONE Builder’s Sets are a perfect way to get your M5 rifle off to a solid start.  Each builder’s set includes an Aero Precision M5 Receiver Set and 12.7″ ATLAS S-ONE M-LOK Handguard finished with Cerakote in Flat Dark Earth.

Aero M5 receivers are engineered to match flawlessly, providing the operator with superior performance and accuracy in a durable and dependable platform

Builder’s Sets Include:

  • M5 Assembled Upper Receiver
  • M5 Stripped Lower Receiver 
  • 12.7″ ATLAS S-ONE M-LOK Handguards (Mounting Kit & Barrel Nut Included).

Upper Receiver Features:

  • M4 Feedramps
  • .2795” takedown pin holes (DPMS size)
  • AR 308 High Profile (.210) Tang
  • Accepts standard DPMS .308 components
  • Includes Port Door and Forward Assist

Lower Receiver Features:

  • Works with standard DPMS 308 components and magazines
  • Rear takedown pin detent hole is threaded for a 4-40 set screw
  • Bolt catch is threaded for a screw pin (no roll pin needed)
  • Integrated trigger guard
  • Selector markings will work with 45, 60 or 90-degree safety selectors
  • Accepts Battle Arms Development short throw safety selectors but will work with any standard selector
  • No gap with aftermarket pistol grips


The new Aero Taper Lock Attachment System (ATLAS) is functional and aesthetically pleasing. 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 often seen with current applications during installation.

Handguard Features:

  • 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
  • 1.5″ Inside diameter
  • Compatible with AR308 upper receivers and barrels

Product Information


Aero Precision










6061-T6 Aluminum, 7075-T6 Aluminum




Standard DPMS AR10 Components

Made in USA



12.7" M-LOK


Hardware Mounting Weight – 4.72oz


Before MAKING your purchase, please carefully review the information below.

Click Here for FFL Order Processing Lead Times

Review our FFL Ordering Instructions HERE before placing your order.

  • Prices do not include your dealer’s transfer fees.
  • Not eligible for return after transferred into your possession via ATF Form 4473.
  • There will be a 30% restocking fee on all controlled items returned because of failed background checks.

Federal law requires that you be 21 years of age or older to purchase a pistol, stripped receiver, or frame. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver, not a handgun or long gun. However, they are still “firearms” by definition and are subject to the same GCA limitations as any other firearm. See Section 921(a)(3)(b). 18 U.S.C. Section 922(b)(1) makes it unlawful for a licensee to sell any firearm other than a shotgun or rifle to any person under the age of 21.

Sales / Shipping Restrictions

Arm or Ally

Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and was named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!

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