Aero Precision M4E1 Stripped Lower Receiver, Special Edition: Franklin Snake
This lower receiver features Benjamin Franklin’s political cartoon “Join, or Die” engraved on the magwell. This design was created in 1754 to represent the need for unification among the Thirteen Colonies later becoming an iconic symbol leading up to and during the American Revolution. The cartoon was used to encourage Colonists to stand together as it was pivotal to the success of the Revolutionary War. This design remains symbolic of American pride, perseverance, and unification nearly 250 years later.
The 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.
Includes:
- Stripped M4E1 Lower Receiver
- Nylon tipped tensioning set screw
- Threaded Bolt Catch Pin
| Weight | 8 oz |
|---|---|
| Color | Black, FDE |
| MPN | APAR600023C, APAR600024C |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
- design
- Maxim MDX 510
- tensioner screw
- enhancements
- price
- patch
- build experience
- finishes
- build
- sort
United States
Billet baby
Love it have Centurion billet upper perfect match in design
USTop Notch!
Excellent enhancements for a very easy build experience! Threaded takedown detention spring hole, threaded bolt catch release (pin included), tensioner screw for any sort of slack between upper/ lower and integrated trigger guard. Very nice. Awesome finishes as well…using the FDE model on my Maxim MDX 510 build, but bought both colors.
USSolid Lower Comes with a nice patch
I didn't know it came with the patch to match. It's Aero's Enhanced lower, just with the join or die logo. Came in a little cheaper last month than the basic enhanced so i got 2. And now they dropped the price on the standard so meh. Anyway, its a solid purchase. You won't regret it.
