Aero Precision Stripped M4E1 Lower Receiver - Special Edition - Freedom

Manufactured by Aero Precision
SKU: APAR600005C
MPN: APAR600005C
Manufactured by Aero Precision
1 Review

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•NJ, NY and CA are not able to accept transfers at this time.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



The Aero Precision M4E1 Special Edition Lower Receiver delivers billet aesthetics in a forged package. This enhanced forging is machined from 7075-T6 aluminum and compatible with all Mil-Spec AR-15 parts. A threaded bolt catch roll pin offers simpler installation of the bolt catch and virtually eliminates the possibility of damage to the receiver finish during installation (pin included). 1/16" Hex Key required for assembly. An integrated trigger guard eliminates the possibility of breaking the trigger guard tabs and an upper tension screw inserted in the grip tang of the lower receiver provides a fine tune adjustment for the fit of the upper and lower receiver. This special edition Freedom model features an American flag engraving on the magazine well, “FREEDOM” as the model, and “XXXX-4JULY” serial number range.

  • Compatible with standard AR-15 components and magazines
  • American flag magwell engraving
  • FREEDOM model number
  • XXXX-4JULY serial number range
  • Nylon tipped tensioning set screw
  • Threaded bolt catch roll pin (included)
  • Machined from 7075-T6 forged aluminum
  • Anodized black
  • Rear takedown pin detent hole is threaded for a 4-40 set screw
  • Weight: 8.35 oz

A threaded takedown pin detent recess allows easy installation of the takedown pin detent and spring with the use of a 4-40 set screw. Increased magwell flare aids in quick and efficient magazine changes. Marked and milled to accept short-throw safety selectors but will work with standard selectors as well.
Aero Precision is known for superior engineering and machining. They push the boundaries of manufacturing and challenge the status quo by constantly looking for new ways to develop and evolve.
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BrandAero Precision
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154
Weight8.35 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

Ratings & Reviews

1 review

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Exactly what you want!

by -

So happy with this purchase, it honestly looks even better in person. The magwell flare is real, looks better than upgrades I've seen on "normal" lowers. The finish was so clean, I was really impressed by the quality and attention to detail on this thing. The pictures don't do it justice, you can clearly see all fifty stars in person. NOTE: the safety switch is for printed for a short lever (not 100% sure the exact term) but my standard safety installed and functions, but when going from FIRE to SAFE, I get two clicks, essentially I can stop between the two, which does not allow the trigger to pull back, but doesn't feel as "hard" as on full safe. I'm sure its an easy upgrade/fix but doesn't impede function at all. Processing was lighting fast, Primary Arms got it out the door right away, I was very pleased, will recommend them to friends.