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M4e1-T 300 Blackout Complete Uppers - M4e1 300blk Assembled Upper 10''''bbl Threaded W/Rm9.3'''' Hg Fde
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$589.99
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SKU: 430103921
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 offering ample space for mounting needs, which suits hunters and shooters who want a tidy setup without giving up flexibility. Its assembled configuration makes it a straightforward option for a rifle build centered on the 300 Blackout cartridge. The FDE finish adds a subdued look that fits well in field-oriented or range-focused applications.
Why Hunters Choose the Aero Precision
Includes Aero
Precision’s ATLAS R-ONE Handguard for
Slim-profile Handguard
Design helps keep the upper
Handguard Is
Size and weight in mind
Atlas Attachment
System is described as durable
Complete Upper
Configuration simplifies setup for a
Key Features
- Complete upper from Aero Precision in 300 Blackout configuration.
- Includes Aero Precision’s new ATLAS R-ONE Handguard.
- Handguard is designed with size and weight in mind.
- Provides ample real estate for attachment needs.
- Uses the proprietary ATLAS attachment system.
- Maintains a slim profile with durable, dependable mounting support.
Best Used For
- Hunters building a compact 300 Blackout upper for short-range field use
- Users who want a slim handguard with room for accessory mounting
- Shooters looking for a complete upper from Aero Precision
- Those prioritizing a lightweight-feeling setup without extra bulk
Specifications
| Assembled | Yes |
|---|---|
| Attachment System | ATLAS attachment system |
| Barrel Length | 10" |
| Blade Finish | FDE |
| Caliber | 300 Blackout |
| Handguard | ATLAS R-ONE Handguard |
| Handguard Length | 9.3" |
| Threaded Barrel | Yes |
| Upper Type | Complete upper |
Pros
- Includes Aero Precision’s ATLAS R-ONE Handguard for accessory mounting flexibility.
- Slim-profile handguard design helps keep the upper compact in hand.
- Handguard is designed with size and weight in mind.
- ATLAS attachment system is described as durable and dependable.
- Complete upper configuration simplifies setup for a 300 Blackout build.
Considerations & Trade-offs
- The ATLAS R-ONE handguard is designed with size and weight in mind, so the setup favors a slimmer profile over a bulkier, more heavily accessorized feel.
- The handguard still offers plenty of real estate for attachments, but users should plan their layout carefully to keep the front end organized.
- This is a complete upper, so it is intended as a ready-to-use upper assembly rather than a stripped or highly customizable starting point.
- The product description emphasizes the handguard and mounting system; other component details are not provided here, so buyers may want to verify the full configuration before purchase.
Suggested Comparisons
- Complete upper receivers
- 300 Blackout AR-style uppers
- Free-float handguard uppers
- Short-barreled rifle upper assemblies
Suggested Accessories
- Optic mount
- Backup iron sights
- Weapon light
- Sling
Frequently Asked Questions
What is included with this complete upper?
The source data says this is a complete upper from Aero Precision and that it includes the ATLAS R-ONE handguard. It also identifies the product as an assembled upper in 300 Blackout with a 10" barrel and a threaded configuration. No other included components are listed.
Is this upper chambered in 300 Blackout?
Yes. The product title identifies it as a 300 Blackout complete upper, and the long description also refers to it as a 300blk assembled upper.
What handguard does this upper use?
It uses Aero Precision’s ATLAS R-ONE handguard. The description says the handguard is designed with size and weight in mind while still providing plenty of real estate for attachments.
Does the handguard offer attachment options for accessories?
Yes. The description states that the ATLAS R-ONE provides plenty of real estate to accommodate attachment needs and uses Aero Precision’s proprietary ATLAS attachment system as a mounting platform.
What can be confirmed about the barrel and muzzle setup?
The product title identifies a 10" barrel and a threaded configuration. The source data does not provide additional barrel or muzzle specifications.