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M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rcvr Threaded W/M16 Cut Black
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$149.99
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SKU: 100026238
Overview
Built for AR15-pattern builds, this upper receiver combines an angular machined profile with a threaded design that accepts a standard AR15 barrel nut. It is forged from 7075-T6 aluminum and precision machined to work with mil-spec AR15 parts, with the port door and forward assist already installed. The enhanced body profile is intended to complement the matching M4E1 lower receiver for a coordinated setup with a more refined look than a standard mil-spec upper. For hunters and shooters assembling a custom rifle, it offers a practical foundation without adding unnecessary complexity.
Why Hunters Choose the Aero Precision
Angular Machined
Design sets it apart from
Threaded Accept
Standard AR15 barrel nut
Forged From
7075-T6 aluminum for a robust
Precision Machined
All mil-spec AR15 parts
Port Door
Forward assist come pre-installed
Key Features
- Angular machined M4E1 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 for a matched receiver set.
Best Used For
- Builders wanting a threaded upper receiver compatible with standard AR15 barrel nuts
- Users assembling a mil-spec AR15 parts-compatible upper with pre-installed port door and forward assist
- Hunters or shooters seeking an angular receiver profile with enhanced body styling
- Anyone pairing an M4E1 upper with an M4E1 lower for a coordinated receiver set
Specifications
| Barrel Nut Compatibility | Standard AR15 barrel nut |
|---|---|
| Blade Finish | FDE / Black |
| Body Profile | Enhanced body profile |
| Caliber | 5.56mm / 5.56 NATO |
| Compatibility | All mil-spec AR15 parts |
| Design | Angular machined design |
| Forward Assist | Pre-installed |
| M16 Cut | Yes |
| Material | 7075-T6 Aluminum |
| Port Door | Pre-installed |
| Receiver Set Pairing | M4E1 Lower Receiver |
| Threaded | Yes |
| Upper Receiver Type | Assembled Upper Receiver |
Pros
- Angular machined design sets it apart from standard mil-spec upper receivers.
- Threaded to accept a standard AR15 barrel nut.
- Forged from 7075-T6 aluminum for a robust receiver foundation.
- Precision machined to work with all mil-spec AR15 parts.
- Port door and forward assist come pre-installed.
- Pairs with the M4E1 Lower Receiver for a billet-looking receiver set.
Considerations & Trade-offs
- Threaded to accept a standard AR15 barrel nut, so it is not a direct fit for setups that require a different barrel nut system.
- Designed to work with mil-spec AR15 parts, which may limit compatibility with non-standard components.
- The port door and forward assist are pre-installed, so there is less room for customization at the receiver level.
- Its enhanced, billet-like profile is a styling and fitment choice, but the product is still presented as a threaded upper receiver rather than a true billet receiver.
Suggested Comparisons
- AR-15 upper receivers
- AR-15 receiver sets
- AR-15 upper receiver parts
- Aero Precision M4E1 lower receivers
Suggested Accessories
- AR15 barrel nut
- M4E1 lower receiver
- Port door
- Forward assist
Frequently Asked Questions
What comes pre-installed on the M4E1 Threaded Upper Receiver?
The product description states that the port door and forward assist are pre-installed.
What type of barrel nut does this upper receiver accept?
It is threaded to accept a standard AR15 barrel nut.
Is this upper receiver compatible with mil-spec AR15 parts?
Yes. The description says it is precision machined to work with all mil-spec AR15 parts.
What material is the upper receiver forged from?
It is forged from 7075-T6 aluminum.
Does this upper receiver match a specific lower receiver?
The description says it is designed to pair perfectly with the M4E1 Lower Receiver.