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M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rcvr Threaded W/M16 Cut Brown
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$159.99
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SKU: 430103908
Overview
Built for AR-15 pattern setups, this upper receiver offers a more angular profile than standard mil-spec designs while still accepting a standard AR15 barrel nut. It is forged from 7075-T6 aluminum and precision machined to work with all mil-spec AR15 parts, with the port door and forward assist already installed. The threaded configuration makes it a practical option for builders who want the M4E1 enhanced look and compatibility without moving to a billet receiver set. It is best suited for shooters assembling a rifle around Aero Precision’s M4E1 system and looking for a clean, integrated upper to match.
Why Hunters Choose the Aero Precision
Angular Machined
Design stands apart from standard
Threaded Accept
Standard AR15 barrel nut
Forged From
7075-T6 aluminum
Precision Machined
Mil-spec AR15 parts
Port Door
Forward assist are pre-installed
Key Features
- Threaded upper receiver accepts a standard AR15 barrel nut.
- Forged from 7075-T6 aluminum and precision machined.
- Compatible with all mil-spec AR15 parts.
- Includes port door and forward assist pre-installed.
- Features an angular machined design with an enhanced body profile.
- Designed to pair with the M4E1 Lower Receiver.
Best Used For
- Builders assembling a 5.56 NATO AR15 upper with standard barrel nut compatibility.
- Users wanting a pre-installed port door and forward assist to simplify assembly.
- Hunters or shooters pairing an upper with an M4E1 lower receiver.
- AR15 owners seeking an enhanced forged receiver with a more angular profile.
Specifications
| Barrel Nut Compatibility | Standard AR15 barrel nut |
|---|---|
| Body Profile | Enhanced body profile |
| Caliber | 5.56mm / 5.56 NATO |
| Compatibility | Mil-spec AR15 parts |
| Design | Angular machined design |
| Finishcolor | FDE / Brown |
| Included Components | Port door and forward assist pre-installed |
| M16 Cut | Yes |
| Material | 7075-T6 Aluminum |
| Spec Name | Upper Receiver Type |
| Spec Value | Assembled Upper Receiver |
| Threaded | Yes |
Pros
- Angular machined design stands apart from standard mil-spec upper receivers.
- Threaded to accept a standard AR15 barrel nut.
- Forged from 7075-T6 aluminum.
- Precision machined for compatibility with mil-spec AR15 parts.
- Port door and forward assist are pre-installed.
- Designed to pair with the M4E1 Lower Receiver.
Considerations & Trade-offs
- Threaded to accept a standard AR15 barrel nut, so it is not the right choice if you are specifically building around a different barrel nut system.
- The port door and forward assist are pre-installed, which is convenient, but it leaves less room for custom part selection at the upper receiver level.
- It is designed to pair with the M4E1 Lower Receiver for the intended receiver-set look; if you are not using that lower, the visual match may be less relevant.
- The description emphasizes a billet-like appearance from an enhanced forging, so buyers prioritizing a fully billet receiver should note the distinction.
Suggested Comparisons
- AR-15 upper receivers
- AR-15 upper receiver assemblies
- AR-15 lower receiver sets
- AR-15 parts and components
Suggested Accessories
- AR-15 barrel nut
- AR-15 lower receiver
- Port door
- Forward assist
Frequently Asked Questions
Is the port door and forward assist already installed on this upper receiver?
Yes. The product description states that the port door and forward assist are pre-installed.
What barrel nut does this upper receiver accept?
It is threaded to accept a standard AR15 barrel nut.
What material is the upper receiver made from?
The source data says it is forged from 7075-T6 aluminum.
Will this upper work with mil-spec AR15 parts?
Yes. The description says it is precision machined to work with all mil-spec AR15 parts.
Is this upper designed to match a specific lower receiver?
Yes. It is described as designed to pair perfectly with the M4E1 Lower Receiver.