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M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembld Upper M4 16'''' Bbl Mid-Length Threaded Blk
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$589.99
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SKU: 100054460
Overview
This complete upper is built around Aero Precision’s M4E1 threaded assembled upper receiver and ATLAS R-ONE M-LOK handguard, giving hunters and shooters a ready-to-build platform for a 5.56 setup. The handguard is designed to keep the profile slim while still offering ample space for accessories, making it a practical choice for a field rifle or a general-purpose carbine. Its ATLAS attachment system is intended to provide a secure mounting platform without adding unnecessary bulk. Available with either a 16" 5.56 CMV barrel or an 18" 5.56 rifle-length CMV barrel, it suits users who want a complete upper with a straightforward, modular layout.
Why Hunters Choose the Aero Precision
Includes Aero
Precision's ATLAS R-ONE handguard system
Slim-profile Handguard
Design helps keep the upper
M-lok Handguard
Space for attachment needs
Atlas Attachment
System is described as durable
M4e1 Threaded
Assembled upper receiver comes anodized
Key Features
- Complete upper receiver from Aero Precision
- Includes the M4E1 threaded assembled upper receiver
- Features a 15-inch ATLAS R-ONE M-LOK handguard
- Uses Aero Precision’s ATLAS attachment system
- Offered with a 16-inch or 18-inch 5.56 CMV barrel option
- Anodized black finish on the upper receiver
Best Used For
- Hunters wanting a complete upper with a slim-profile handguard and threaded assembled receiver
- Users planning a 5.56 build that needs M-LOK attachment space without excess bulk
- Shooters who prefer a ready-to-install upper from Aero Precision for a straightforward setup
- Outdoor enthusiasts seeking a complete upper with a durable mounting platform and black anodized finish
Specifications
| Alternate Barrel Caliber | 5.56 |
|---|---|
| Alternate Barrel Gas System | Rifle Length |
| Alternate Barrel Length | 18" |
| Alternate Barrel Material | CMV |
| Alternate Barrel Option | 18" 5.56 Rifle Length CMV |
| Attachment System | ATLAS attachment system |
| Barrel Caliber | 5.56 |
| Barrel Gas System | Mid-Length |
| Barrel Length | 16" |
| Barrel Material | CMV |
| Barrel Option | 16" 5.56 CMV Barrel |
| Handguard | ATLAS R-ONE M-LOK Handguard |
| Handguard Length | 15" |
| Upper Receiver | M4E1 Threaded Assembled Upper Receiver |
| Upper Receiver Finish | Anodized Black |
Pros
- Includes Aero Precision's ATLAS R-ONE handguard system.
- Slim-profile handguard design helps keep the upper compact.
- M-LOK handguard offers space for attachment needs.
- ATLAS attachment system is described as durable and dependable.
- M4E1 threaded assembled upper receiver comes anodized black.
- Available with 16-inch 5.56 CMV barrel configuration.
Considerations & Trade-offs
- Complete upper configuration means less flexibility if you want to choose a different handguard or barrel setup.
- The 15" ATLAS R-ONE handguard offers attachment space, but its longer profile may not suit users who prefer a more compact front end.
- This listing presents two possible barrel-length configurations, so buyers should verify which version is being selected before ordering.
- The product is described as a complete upper receiver assembly, so it is intended for users who want an integrated setup rather than individual component selection.
Suggested Comparisons
- AR-15 complete upper receivers
- M-LOK handguard systems
- 5.56 NATO upper assemblies
- AR-15 barrel-length configurations
Suggested Accessories
- M-LOK rail accessories
- Optic mount
- Backup iron sights
- Weapon light
Frequently Asked Questions
What is included in this complete upper receiver assembly?
According to the product data, it includes an M4E1 threaded assembled upper receiver in anodized black and a 15" ATLAS R-ONE M-LOK handguard. The listing also shows two possible barrel configurations: a 16" 5.56 CMV barrel or an 18" 5.56 rifle-length CMV barrel.
Is this upper set up for M-LOK accessories?
Yes. The handguard is listed as an ATLAS R-ONE M-LOK handguard, so it is intended for M-LOK-compatible accessories.
What does Aero Precision say about the ATLAS R-ONE handguard design?
The product description says the R-ONE handguards are designed with size and weight in mind while still providing plenty of real estate for attachment needs. It also states that the ATLAS attachment system is a durable and dependable mounting platform with a slim profile.
Does the product data specify which barrel length comes with this upper?
The listing includes two barrel options in the description: 16" 5.56 CMV or 18" 5.56 rifle-length CMV. If you need to confirm the exact configuration for the unit being sold, that detail is not clearly separated in the provided data.
What finish is listed for the upper receiver?
The upper receiver is listed as anodized black.