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M4e1-T 300 Blackout Complete Uppers - M4e1 300blk Assembled Upper 10''''bbl Threaded W/Rm9.3'''' Hg Blk
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$554.99
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SKU: 430103920
Overview
Built for a compact .300 Blackout setup, this complete upper pairs Aero Precision’s M4E1 platform with the ATLAS R-ONE handguard for a streamlined, accessory-ready front end. The handguard is designed to keep the profile slim while still leaving room for mounting needs, which suits hunters and shooters who want a tidy setup without giving up flexibility. With the assembled upper and threaded 10-inch barrel configuration, it fits well as a purpose-driven option for short-format builds. The trade-off is straightforward: it emphasizes compactness and modularity rather than a full-size rifle profile.
Why Hunters Choose the Aero Precision
Complete Upper
Includes Aero Precision's new ATLAS
Slim-profile Handguard
Size and weight in mind
Plenty Real
Estate for attachment needs
Atlas Attachment
System offers a durable, dependable
Maintains Strength
Stability in a streamlined handguard
Key Features
- Complete upper from Aero Precision
- Includes the new ATLAS R-ONE Handguard
- Handguard is designed with size and weight in mind
- Provides plenty of real estate for attachment needs
- ATLAS attachment system offers a durable mounting platform
- Slim profile with strength and stability
Best Used For
- Hunters building a compact 300 Blackout upper for a streamlined setup
- Users wanting a slim handguard with room for accessory mounting
- Shooters who prefer a complete upper from Aero Precision
- Field users prioritizing a lightweight-feeling, low-profile front end
Specifications
| Assembled | Yes |
|---|---|
| Attachment System | ATLAS attachment system |
| Barrel Length | 10 in |
| Barrel Threaded | Yes |
| Caliber | 300 Blackout |
| Color | Black |
| Handguard | ATLAS R-ONE Handguard |
| Handguard Length | 9.3 in |
| Profile | slim profile |
| Upper Type | complete upper |
Pros
- Complete upper includes Aero Precision's new ATLAS R-ONE Handguard.
- Slim-profile handguard is designed with size and weight in mind.
- Provides plenty of real estate for attachment needs.
- ATLAS attachment system offers a durable, dependable mounting platform.
- Maintains strength and stability in a streamlined handguard design.
Considerations & Trade-offs
- The 10\" barrel and 9.3\" handguard create a compact setup, which may limit accessory placement compared with longer configurations.
- The ATLAS R-ONE is designed with size and weight in mind, so users who want maximum rail coverage may find the slimmer profile more selective for mounting needs.
- As a complete upper, it is intended to be paired with a compatible lower and setup choices should be matched to the intended 300 Blackout use case.
Suggested Comparisons
- AR-15 complete upper receivers
- 300 Blackout upper assemblies
- Free-float handguard upper setups
- Compact carbine upper configurations
Suggested Accessories
- Optic mount
- Weapon light
- Sling
- Backup iron sights
Frequently Asked Questions
What is included with this complete upper?
The source data says this complete upper includes Aero Precision’s new ATLAS R-ONE Handguard. It is described as a complete upper assembly, but no additional included components are listed.
What handguard system does this upper use?
It uses Aero Precision’s proprietary ATLAS attachment system on the R-ONE handguard.
Is the handguard designed for accessories?
Yes. The description says the R-ONE handguard provides plenty of real estate to accommodate attachment needs.
Is this upper intended to stay slim?
Yes. The ATLAS attachment system is described as maintaining a slim profile while still providing strength and stability.
What caliber is this upper for?
The product title identifies it as a 300 Blackout complete upper.