Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 100049003
Built for an AR-15/M4E1-style 5.56mm setup, this assembled upper receiver is intended for shooters who want Aero Precision’s enhanced upper design without a forward assist. Its one-piece construction integrates the handguard mounting platform with the upper receiver, supporting a free-floated handguard with a simplified 8-screw interface. The design also includes lightening cuts and is presented as an easy-install option for a barrel assembly. Finished in FDE, it suits hunters and range users looking for a clean, purpose-driven upper receiver foundation.
One-piece M4e1
The upper receiver
Free-float Handguard
Only eight screws
No Forward
Assist provisions for a cleaner,
Additional Lightening
Cuts are described to help
Integrated Forging
Is presented as a stronger
| Blade Finish | Fde |
|---|---|
| Caliber | 5.56mm |
| Cooling | More efficient cooling |
| Design | One-piece design |
| Forward Assist | No |
| Free Floated Handguard Compatibility | Yes |
| Handguard Mounting Hardware | 8 screws |
| Handguard Mounting Platform | Integrated with upper receiver |
| Installation | Simply insert your barrel assembly |
| Lightening Cuts | Yes |
| Upper Receiver Type | Assembled Upper Receiver |
No. The product is described as an M4E1 assembled upper receiver with no forward assist provisions.
The description says it uses a one-piece design that combines the handguard mounting platform with the upper receiver itself.
The source states that the free-floated handguard mounting setup is condensed to 8 screws.
The description says installation is easy: simply insert your barrel assembly.
The manufacturer listed in the source data is Aero Precision.