Aero Precision M4E1 Pistol Complete Lower Receiver w/ MOE SL® Grip & SL Carbine Stock
The Aero Precision M4E1 Pistol Complete Lower Receiver adapts the cutting‑edge M4E1 platform to a pistol‑length form factor. Machined from 7075‑T6 aluminum with a black hard‑coat anodize finish, this lower features strengthened lower receiver pockets, an integrated flared magwell, and an enlarged trigger opening for gloved operation. It ships fully assembled with a Magpul MOE SL® grip and SL Carbine stock installed on a carbine extension, giving you immediate readiness for short‑barreled or PDW builds.
Designed for shooters who demand reliability in a compact package, the M4E1 Pistol lower includes a complete lower parts kit and buffer assembly. The flared magwell speeds reloads, while the reinforced takedown pin areas ensure secure alignment with any Aero M4E1 upper. The integral trigger guard eliminates the need for roll pins, increases structural strength, and provides added durability under field conditions. An aggressive grip texture and ergonomically angled design help improve control during rapid fire or close‑quarters transitions.
The included SL Carbine stock offers a lightweight, minimalist profile that complements the compact nature of pistol builds while providing solid shoulder support for those using braces or other accessories. The rear takedown pin detent and spring are secured beneath the grip, simplifying installation and eliminating a common frustration point. Whether you’re creating a pistol SBPDW for CQB or a lightweight range trainer, this complete lower delivers Aero’s signature fit and finish with zero assembly frustration.
Every dimension is produced to Mil‑Spec tolerances and backed by Aero Precision’s lifetime warranty. The M4E1 Pistol lower provides the strongest, most versatile foundation for your AR‑15 pistol build.
Product Information
| Receiver Extension | Carbine |
|---|---|
| Finish | Anodized |
| Manufacturer | Aero Precision |
| Compatibility | Standard AR15 components |
| Platform | AR15 |
| Color | Black |
| Material | 7075-T6 Aluminum |
| Buffer Weight | Standard |
| Series | M4E1 |
| Markings | "Cal Multi" |
| Made in USA | Yes |
We fully comply with all federal, state, and local laws regarding the sale of restricted products. We do not market or sell to prohibited jurisdictions, and any attempts to induce illegal activity, including by law enforcement or government agencies, will be rejected and may be reported. All orders are subject to legal verification, and those in violation will be canceled. By using this site, you confirm compliance with all applicable laws.
Important!
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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 are still “firearms” by definition and are subject to the same GCA limitations as any other firearm. 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.
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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