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M4e1 5.56 Assembled Upper Receiver Carbine W/G2 Handguard - M4e1 5.56 Nato Assem Uppr Rcvr M4 16'''' Bbl Carbine Black
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$579.99
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SKU: 100025508
Overview
Built for AR-15 users who want a ready-to-run upper with room to configure, this assembled receiver arrives with the bolt carrier group and charging handle left open for your preferred setup. It pairs Aero Precision’s M4E1 receiver with the Gen 2 Enhanced M-LOK handguard, creating a stable platform for mounting accessories and optics. The full-length Picatinny top rail extends across the receiver and handguard for a continuous sighting and accessory interface. It suits hunters and shooters who value a streamlined carbine upper with customization flexibility, while still keeping the build straightforward.
Why Hunters Choose the Aero Precision
Fully Assembled
Upper receiver saves time while
Gen 2
Enhanced M-LOK handguard provides extensive
Full-length Picatinny
Top rail offers continuous optics
M4e1 Receiver
Forged-receiver parts compatibility
Carbine Upper
Configuration is built around a
Key Features
- Fully assembled M4E1 5.56mm carbine upper receiver
- Includes Aero Precision Gen 2 Enhanced M-LOK handguard
- Full-length Picatinny top rail extends across receiver and handguard
- Compatible with mil-spec parts
- Supplied minus bolt carrier group and charging handle
- Designed for accessory mounting across the handguard
Best Used For
- Hunters building a customizable AR-15 upper with room for optics and accessories
- Users wanting a fully assembled upper minus bolt carrier group and charging handle
- Those who prefer a carbine-length setup with a full-length Picatinny top rail
- Shooters looking for a receiver that combines custom billet styling with mil-spec compatibility
Pros
- Fully assembled upper receiver saves time while leaving bolt carrier group and charging handle open for customization.
- Gen 2 Enhanced M-LOK handguard provides extensive accessory-mounting options.
- Full-length Picatinny top rail offers continuous optics and accessory mounting space.
- M4E1 receiver combines custom billet styling with forged-receiver parts compatibility.
- Carbine upper configuration is built around a 5.56mm NATO chambering.
- Aero Precision branding and M4E1 platform appeal to AR-15 builders seeking a configurable upper.
Considerations & Trade-offs
- Ships fully assembled, but the bolt carrier group and charging handle are not included, so those components still need to be selected separately.
- The integrated Gen 2 Enhanced M-LOK handguard and full-length Picatinny top rail provide extensive mounting options, which may add more bulk than a simpler upper setup.
- Positioned as a carbine upper receiver, so it is intended for that configuration rather than a more compact or specialized build.
- The description emphasizes compatibility and customization, but does not specify the included barrel details beyond the product title, so buyers may want to verify the exact configuration before purchase.
Suggested Comparisons
- AR-15 upper receiver assemblies
- Complete upper receiver groups
- M-LOK handguard systems
- Picatinny rail handguard setups
Suggested Accessories
- Optic mount
- Backup iron sights
- Charging handle
- Bolt carrier group
Frequently Asked Questions
What comes included with this upper receiver assembly?
It comes fully assembled with Aero Precision's Gen 2 Enhanced M-LOK handguard installed. The bolt carrier group and charging handle are not included.
Is this upper compatible with standard AR-15 parts?
The description says the M4E1 receiver offers "mil-spec" parts compatibility. It is described as a 5.56mm carbine upper receiver.
What kind of accessory mounting does it offer?
It features Aero Precision's Gen 2 Enhanced M-LOK handguard and a full-length Picatinny top rail that runs from the rear of the receiver across the handguard.
Does this upper include a complete rifle?
No. This is an assembled upper receiver, not a complete rifle. The bolt carrier group and charging handle must be added separately.
What is the finish or color of this upper?
The product title identifies it as black.