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M4e1 Assembled Upper Receiver 7.5'''' 5.56mm Pistol Length - M4e1 Assembled Gen 2 Upper Receiver 7.5 Pistol Length
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$369.74
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SKU: 100025503
Overview
Built for a compact AR-15 pistol setup, this upper receiver is intended for shooters who want a short, accessory-ready platform for close-quarters use and range work. It pairs Aero Precision’s M4E1 forged receiver with the Gen 2 Enhanced M-LOK handguard, creating a rigid assembly with a full-length Picatinny top rail and multiple mounting points for compatible accessories. The included QD sling swivel adds another practical attachment option, while the mil-spec receiver compatibility keeps it straightforward to mate with a lower of your choice. For hunters and outdoorsmen looking for a compact build with a clean, integrated layout, it offers a purpose-driven foundation without unnecessary bulk.
Why Hunters Choose the Aero Precision
Compact 7.5-inch
Pistol upper for building an
Includes Aero
Precision Gen 2 Enhanced M-LOK
Gap-free Full-length
Picatinny top rail supports optics
M-lok Attachment
Points provide flexibility for compatible
Qd Sling
Swivel included for sling setup
Key Features
- Aero Precision M4E1 5.56mm 7.5-inch pistol upper receiver
- Forged M4E1 receiver with mil-spec compatibility
- Includes Gen 2 Enhanced M-LOK handguard
- Full-length Picatinny top rail
- M-LOK attachment points for compatible accessories
- QD sling swivel included
Best Used For
- Users building a compact AR-15 pistol platform with M-LOK accessory mounting needs
- Hunters wanting a short upper for tight handling in blinds or vehicles
- Shooters who prefer a rigid handguard with a full-length Picatinny top rail
- Owners seeking a receiver compatible with a lower of their choice for a custom build
Specifications
| Accessory Interface | M-LOK-compatible |
|---|---|
| Assembly Status | Assembled |
| Barrel Length | 7.5" |
| Caliber | 5.56mm |
| Generation | Gen 2 |
| Handguard | Gen 2 Enhanced M-LOK Handguard |
| Handguard Attachment System | unique attachment system |
| Length | Pistol Length |
| Platform | AR-15 pistol |
| Qd Sling Swivel | Included |
| Receiver Compatibility | mil-spec |
| Top Rail | full-length Picatinny top rail |
| Upper Receiver | Aero Precision M4E1 forged receiver |
Pros
- Compact 7.5-inch pistol upper for building an AR-15 pistol platform
- Includes Aero Precision Gen 2 Enhanced M-LOK handguard
- Gap-free full-length Picatinny top rail supports optics and accessories
- M-LOK attachment points provide flexibility for compatible accessories
- QD sling swivel included for sling setup
- M4E1 receiver offers mil-spec compatibility with Aero's enhanced features
Considerations & Trade-offs
- The 7.5" pistol-length setup is intentionally compact, which can limit versatility compared with longer upper configurations for users who want a more all-purpose build.
- This is an upper receiver assembly only and must be paired with a compatible lower to complete the firearm.
- The included Gen 2 Enhanced M-LOK handguard is optimized for M-LOK accessories, so users with non-M-LOK setups may need additional mounting solutions.
- The product is described as an AR-15 pistol platform, so it is best suited to buyers specifically building around that format rather than a general-purpose rifle upper.
Suggested Comparisons
- AR-15 pistol uppers
- Compact AR-15 pistol builds
- M-LOK handguards and rail systems
- Complete upper receiver assemblies
Suggested Accessories
- M-LOK accessories
- QD sling swivel
- AR-15 lower receiver
- Backup iron sights
Frequently Asked Questions
What platform is this upper receiver designed for?
It is a 5.56mm 7.5" pistol upper receiver intended to be mated with a lower of your choice to form an AR-15 pistol.
Does this upper include a handguard?
Yes. The description says it comes with Aero Precision's Gen 2 Enhanced M-LOK Handguard.
What accessory mounting options are mentioned?
The source mentions M-LOK-compatible accessory attachment points, a full-length Picatinny top rail, and a QD sling swivel.
Is this a complete firearm?
No. The description identifies it as an upper receiver that must be paired with a compatible lower to form an AR-15 pistol.
What should I know about compatibility?
The description says the M4E1 receiver combines "mil-spec" receiver compatibility with aftermarket features, but it does not provide a full compatibility list or specify every part that will fit.