Aero Precision M4E1 Pro Complete Lower Receiver
or 4 interest-free payments of $120.00 with
This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- Backed by the Aero Precision Warranty! what it covers
Product description
Aero Precision M4E1 Pro Complete Lower Receiver
The Aero Precision M4E1 Pro Complete Lower Receiver is a premium foundation for building a high-quality AR-15, offering unmatched durability and compatibility with a wide variety of uppers. Aero Precision’s new Pro line is a new level of performance and fine machining with every little detail being considered and addressed.
An ambidextrous safety, bolt catch/release, and safety selector lets users with either dominant hand easily manipulate the controls of the weapon for even faster function. The M4E1 Pro Complete Lower comes assembled from the factory, enabling users to add on their custom uppers with the click of two pins. Additionally, this lower comes with the tried and true Magpul MOE Pistol Grip and SL Stock for even more comfort and ergonomics.
Crafted from 7075-T6 forged aluminum, the M4E1 Pro combines the strength of a traditional forged lower with the sleek aesthetics and enhanced features of a modern design. Its integrated trigger guard and flared magazine well improve ergonomics and functionality, making reloads faster and more efficient. The receiver’s anodized finish ensures superior resistance to corrosion and wear, maintaining its appearance and performance even under heavy use.
Whether you’re building a tactical carbine, competition rifle, or all-purpose firearm, this lower receiver provides the reliability and precision you demand.
Includes
- M4E1 PRO Lower Receiver
- PRO Ambidextrous Safety
- EZ Takedown/Pivot Pins
- Aero Precision Enhanced Buffer Tube
- H Buffer
- Magpul MOE Grip
- Magpul MOE SL Stock

Specifications
- Brand: Aero Precision
- Made In America: Yes
- Platform: AR15 / Multi
- Model: M4E1 Pro Complete Lower Receiver
- Material: Forged 7075-T6 and Polymer (Buttstock and Pistol Grip)
- Colors: Black, Kodiak Brown, and OD Green
- Finish: Anodized and Black Nitride
All 3 options on this page
- Aero Precision M4E1 Pro Complete Lower Receiver - Color: Black | SKU: APAR600194
- Aero Precision M4E1 Pro Complete Lower Receiver - Color: Anodized OD Green | SKU: APAR600195
- Aero Precision M4E1 Pro Complete Lower Receiver - Color: Anodized Kodiak Brown | SKU: APAR600196
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Questions & Answers
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Warranty & returns
Backed by the Aero Precision Warranty!
Aero Precision Warranty
If for any reason you have a warranty issue with one of our products, please contact us at 253-272-8188.
Please describe your situation, include your name and order number or transaction id. One of our technical specialists will then review your claim and contact you within 3-5 business days.
If you have images to send, please email them to support@aeroprecisionusa.com
Damaged Items
In regards to claims dealing with damaged or blemished products, we ask that you create a Help Desk Ticket on your My Account page. If you don’t have an account with us, please go to the Contact Us page and fill out the form for review within 72 hours upon receiving the shipment.
If you have images to send, please email them to support@aeroprecisionusa.com
Failed Background Check
There will be a 30% restocking fee on all lower receivers returned because of failed background checks.