Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK

Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK

Aero Precision M4E1 Stripped Lower
Aero Precision M4E1 Stripped Lower
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Weight 9.00 oz
Manufacturer Part Number APAR600001C

The Aero Precision M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

M4E1 Lower Receiver Improvements:

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly.
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.


  • Stripped M4E1 Lower Receiver
  • Nylon tipped tensioning set screw
  • Threaded Bolt Catch Pin
Average customer rating:

5 Most recent customer reviews...


Jul 26, 2020

the Aero Precision uppers and lowers are very good quality combined with extra perks such as threaded holes and snubber to keep upper and lower tight if loose fit. Their prices do not reflect the quality of their products, many uppers/lowers with this quality are much more money. Top Gun Shop is extremely good to deal with, very quick shipping and good prices.
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richard metts

Jul 21, 2020

Great product, many i have purchased are perfect, even blems.
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Chris Herzog

Jul 17, 2020

Great product at a great price! Hard to find both in today’s market!
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Brad Karlovec

Jun 1, 2020

Top gun supply is known across the world for a great selection of products but most importantly for the amazing service. Aero precision products are the gold standard everything is judged by. Their machining is top notch, and the finish they do is unparalleled in durability and quality.
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Marc J Bellett

May 25, 2020

Great lower. Billet looks with forged construction, still looks and functions great with mil-spec uppers. The tension screw for dialing out play with the upper is a great touch. The best feature to me though is the integrated trigger guard. Matches up perfectly with a Magpul K2 grip, eliminates the pinch point under the trigger that I get with standard lowers. I usually shoot without gloves, this lower is much nicer on my middle finger. Great product, great service from Top Gun.
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