Aero Precision M4E1 .350 Legend Upper (Black) Features
This fully assembled upper features Aero’s enhanced M4E1 threaded upper receiver, combining billet styling with rugged mil-spec compatibility. It includes a forward assist, port door, and laser-engraved T-marks. The ATLAS R-ONE M-LOK handguard provides a lightweight profile, a full-length Picatinny rail, and multiple QD sling sockets for optimal customization and control.
The 20-inch DMR-profile barrel is chambered in .350 Legend, constructed from 4150 CrMoV steel, and features M4 feed ramps, a carbine-length gas system, and a standard A2 flash hider. This upper comes ready for your complete lower and is compatible with most mil-spec AR-15 components. Bolt carrier group and charging handle are not included.
Aero Precision M4E1 .350 Legend Upper (Black) Specifications
- Manufacturer: Aero Precision
- Model: M4E1 Assembled Upper
- Series: .350 Legend
- Caliber: .350 Legend
- Barrel Length: 20″
- Barrel Material: 4150 Chrome Moly Vanadium (CrMoV)
- Barrel Profile: DMR
- Gas System: Carbine-Length
- Gas Block Journal: .750
- Gas Port Size: .0785
- Twist Rate: 1:16
- Feed Ramps: M4
- Flash Hider: A2 Style (9mm)
- Receiver: M4E1 Threaded Upper (Black Anodized Finish)
- Handguard: ATLAS R-ONE (Full Picatinny, M-LOK, QD Sockets)
- Inside Diameter: 1.3″
- Outside Diameter: 1.5″
- Construction: Assembled (No BCG or Charging Handle)
- Compatibility: Mil-Spec AR-15 Lower Receivers
| Barrel Length | 20 |
|---|---|
| Caliber | .350 Legend |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Aero Precision |
| Manufacturer Part Number | APAR700106M100 |
| Model | M4E1 Assembled Upper |
| Type | Uppers |
| UPC | 840014617692 |
Frequently Asked Questions About This Product
Why buy Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: New Arrivals, Uppers.
What tags or features does this product have?
Key features and tags for this product include: New Arrivals, Uppers.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel
All firearms, including the Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Aero Precision M4E1 Assembled Upper .350 Legend 20" Barrel is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
