Aero Precision M4E1 Threaded Complete Upper Features
The 18-inch CMV barrel is made from 4150 CrMoV steel with a QPQ finish, ensuring outstanding durability and resistance to corrosion. Featuring a rifle-length gas system, a 1:7 twist rate, and an A2 flash hider, this barrel delivers consistent performance with various ammunition types. The low-profile gas block enhances reliability and complements the clean aesthetics of the build.
The 15-inch ATLAS R-ONE M-LOK handguard offers a lightweight and slim profile with full M-LOK compatibility for versatile accessory mounting. Its integrated quick disconnect sling sockets provide added utility for sling setups. The M4E1 threaded receiver includes laser-engraved T-marks, M4 feed ramps, and pre-installed port door and forward assist for out-of-the-box readiness. Note: This complete upper does not include a BCG or charging handle, allowing for user customization.
Aero Precision M4E1 Threaded Complete Upper Specifications
- Manufacturer: Aero Precision
- Model: M4E1 Threaded Complete Upper Receiver
- Cartridge: 5.56 NATO
- Barrel Length: 18″
- Gas System: Rifle-Length
- Barrel Material: 4150 CrMoV Steel with QPQ Finish
- Twist Rate: 1:7
- Handguard: 15″ ATLAS R-ONE, M-LOK Compatible
- Receiver: M4E1 Threaded, Anodized Black
- Gas Block: Low Profile, .750″ Journal
- Thread Pattern: 1/2×28 (A2 Flash Hider Installed)
- Features:
- M4 Feedramps
- Laser Engraved T-Marks
- Port Door and Forward Assist Installed
- Lightweight ATLAS R-ONE Handguard (1.3″ ID, 1.5″ OD)
- Quick Disconnect Sling Sockets
| Barrel Length | 18 |
|---|---|
| Caliber | 5.56 |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Aero Precision |
| Manufacturer Part Number | APAR700705M8 |
| Model | M4E1 Threaded Complete Upper |
| Type | Uppers |
| UPC | 840014602087 |
Frequently Asked Questions About This Product
Why buy Aero Precision M4E1 Threaded Complete Upper 5.56 18" 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 Threaded Complete Upper 5.56 18" 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 Threaded Complete Upper 5.56 18" 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: RIFLES, Uppers.
What tags or features does this product have?
Key features and tags for this product include: RIFLES, 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 Threaded Complete Upper 5.56 18" Barrel
All firearms, including the Aero Precision M4E1 Threaded Complete Upper 5.56 18" 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 Threaded Complete Upper 5.56 18" 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.
