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M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Uppr 11.5'''' Carbine 9'''' Atlas S-One Hg Blk
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$429.99
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SKU: 100036051
Overview
Built around Aero Precision’s M4E1 threaded assembled upper receiver and ATLAS S-ONE handguard, this complete upper is aimed at shooters who want a streamlined setup with a slim profile. The ATLAS attachment system is presented as a durable mounting platform, while the handguard design emphasizes size and weight considerations for a lighter build. It is offered with M-LOK compatibility and configuration options that include 12-inch or 15-inch handguards, along with 16-inch 5.56 mid CMV or 18-inch rifle barrel setups. For hunters and field-minded shooters planning a lightweight rifle build, it offers a practical foundation without adding unnecessary bulk.
Why Hunters Choose the Aero Precision
Includes Aero
Precision's ATLAS S-ONE handguard for
Designed Size
Size and weight in mind
Atlas Attachment
System provides a durable, dependable
M4e1 Threaded
Assembled upper receiver included
Available 12-inch
12-inch or 15-inch M-LOK ATLAS
Key Features
- Complete upper receiver from Aero Precision
- Includes the M4E1 threaded assembled upper receiver
- Features the M-LOK ATLAS S-ONE handguard
- ATLAS attachment system offers a slim-profile mounting platform
- Handguard line is designed with size and weight in mind
- Available with 12-inch or 15-inch handguard options
Best Used For
- Hunters building a lightweight 5.56 upper with a slim-profile handguard setup.
- Users wanting an assembled upper with M4E1 receiver and ATLAS S-ONE handguard.
- Shooters planning a compact, modular rifle build with M-LOK accessory mounting.
- Those prioritizing a durable mounting platform without adding unnecessary bulk.
- Builders selecting between 12-inch or 15-inch ATLAS S-ONE handguard options.
Specifications
| Barrel | 16" 5.56 Mid CMV Barrel, 18" Rifle Barrel |
|---|---|
| Gas Block | Low Profile Gas Block |
| Gas Tube | Mid-Length/Rifle Length Gas Tube |
| Handguard | ATLAS S-ONE Handguard |
| Handguard Attachment System | ATLAS attachment system |
| Handguard Length | 12" or 15" |
| Handguard Type | M-LOK |
| M4e1 Threaded Assembled Upper Receiver | true |
| Upper Receiver | M4E1 Threaded Assembled Upper Receiver |
Pros
- Includes Aero Precision's ATLAS S-ONE handguard for a slim-profile setup.
- Designed with size and weight in mind for lightweight builds.
- ATLAS attachment system provides a durable, dependable mounting platform.
- M4E1 threaded assembled upper receiver included.
- Available with 12-inch or 15-inch M-LOK ATLAS S-ONE handguard options.
Considerations & Trade-offs
- The ATLAS S-ONE handguard is built around a slim, lightweight profile, so it may not suit users who prefer a fuller handguard feel or more surface area up front.
- This is a complete upper with fixed configuration options in the listing, so buyers need to confirm the handguard length and barrel setup match their intended build before ordering.
- The product is offered as a complete upper receiver assembly, which is convenient, but it also means less flexibility for those who want to select each component individually.
- The description emphasizes lightweight design and a durable mounting platform, but it does not provide detailed component specifications beyond the listed configuration, so buyers should verify compatibility with their setup.
Suggested Comparisons
- Complete upper receiver assemblies
- Lightweight AR-15 handguard systems
- M-LOK accessory-ready uppers
- 5.56 NATO upper receiver builds
Suggested Accessories
- Magazine
- Optic mount
- Sling
- Weapon light
Frequently Asked Questions
What is included with this upper receiver assembly?
The listing says it is a complete upper that includes Aero Precision's M4E1 threaded assembled upper receiver and ATLAS S-ONE handguard. The description also references barrel, gas block, and gas tube options, but the exact configuration for this specific item is not fully detailed in the provided data.
What handguard system does it use?
It uses Aero Precision's M-LOK ATLAS S-ONE handguard with the proprietary ATLAS attachment system.
Is this upper intended for a lightweight build?
Yes. The product description says the ATLAS S-ONE handguards are designed with size and weight in mind and are intended as a fit for a lightweight build.
What caliber is this upper listed for?
The title identifies it as a 5.56 upper receiver assembly.
Are the exact barrel length and handguard length clearly specified here?
Not fully. The title mentions an 11.5" carbine upper with a 9" Atlas S-One handguard, while the description also references 12" or 15" handguard options and 16" or 18" barrel options. Based on the provided data, the exact configuration for this item is not completely clear.