Aero Precision M4E1-T Assembled Receiver Set - OD Green Cerakote

SKU: APCS100827


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Aero Precision M4E1 Threaded Assembled Receiver Set – OD Green Cerakote

This M4E1 receiver set features our stripped lower receiver with an integrated trigger guard and our assembled upper receiver with an enhanced forging.


M4E1 Lower Receiver in OD Green Cerakote
M4E1 Threaded Assembled Upper Receiver in OD Green Cerakote

M4E1 Lower Receiver Improvements

  • Threaded Bolt Catch Roll Pin: Simplify installation and protect your firearm’s finish with the included pin. Requires a 1/16″ Hex Key for assembly.
  • Integrated Trigger Guard: Reinforce your lower receiver with an integrated trigger guard, eliminating the risk of breaking tabs and providing a robust platform.
  • Upper Tension Screw: Achieve a precise fit between upper and lower receivers using the nylon-tipped tensioning set screw, enhancing stability for any standard AR15 upper.
  • Threaded Takedown Pin Detent Recess: Say goodbye to detents launching across the room – effortlessly install the Takedown Pin Detent and spring with the 4-40 set screw.
  • Increased Magwell Flare: Facilitate quick and efficient magazine changes with the enhanced magwell flare.
  • Compatibility: Marked and milled to accept short-throw safety selectors while still compatible with standard selectors.

M4E1 Upper Receiver Features

  • New enhanced forging gives the upper receiver a “billet look.”
  • New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
  • M4 Feedramps
  • .250 Takedown Pin Holes
  • Laser Engraved T-Marks

Product Information


Aero Precision






OD Green




7075-T6 Aluminum


Standard AR15 components


"Cal Multi"

Made in USA





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 still are “firearms” by definition and subject to the same GCA limitations as any other firearms. 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.

No Sales to: CA, DC, DE, IL, MA, NJ, NY, WA

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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