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M4e1 Threaded 350 Legend Assembled Upper Receiver - M4e1 350 Legend Assembled Upper Dmr 20'''' Carbine Threaded Blk
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$619.99
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SKU: 430103076
Overview
Built for a .350 Legend setup, this assembled upper receiver is aimed at hunters and shooters who want a ready starting point for a carbine-length build. The enhanced forging gives the receiver a refined appearance, while the integrated Picatinny profile is designed to pair with Aero Precision’s Enhanced Series handguards. It includes the port door and forward assist already installed, but it does not come with a charging handle or bolt carrier group, so those components must be selected separately.
Why Hunters Choose the Aero Precision
Enhanced Forging
Gives the upper receiver a
Picatinny Profile
Enhanced Series Handguards
M4 Feedramps
Are included in the receiver
Laser Engraved
T-marks support easier rail indexing
Port Door
Forward assist come installed
Key Features
- Enhanced M4E1 forged upper receiver with a billet-style appearance.
- Threaded upper receiver configured for 350 Legend builds.
- New Picatinny profile designed to blend with Enhanced Series handguards.
- Includes M4 feedramps and .250 takedown pin holes.
- Laser-engraved T-marks support consistent optic and accessory placement.
- Port door and forward assist are installed; charging handle and bolt carrier group are not included.
Best Used For
- Hunters building a .350 Legend rifle for deer hunting and similar straight-wall applications
- Shooters wanting an assembled upper receiver with port door and forward assist already installed
- Users planning an Aero Precision build around Enhanced Series handguards and matching upper styling
- Rifle builders who prefer a threaded upper receiver and do not need a charging handle or bolt carrier group
Pros
- Enhanced forging gives the upper receiver a billet-like appearance.
- Picatinny profile blends seamlessly with Enhanced Series Handguards.
- M4 feedramps are included in the receiver design.
- Laser engraved T-marks support easier rail indexing.
- Port door and forward assist come installed.
- Uses .250 takedown pin holes for compatibility with matching lowers.
Considerations & Trade-offs
- Does not include a charging handle or bolt carrier group, so those components must be selected separately.
- This is an assembled upper receiver, not a complete rifle, so it is intended for users building or configuring a compatible setup.
- The threaded 350 Legend configuration is purpose-built for that caliber, which limits flexibility if you are looking for a more general-purpose upper.
- Compatibility is tied to the listed M4E1/Enhanced Series design details, so matching lower and handguard choices should be verified before purchase.
Suggested Comparisons
- AR-15 upper receivers
- 350 Legend complete uppers
- threaded upper receivers
- assembled upper receiver groups
Suggested Accessories
- Upper receiver parts
- Charging handle
- Bolt carrier group
- Handguard
Frequently Asked Questions
What comes included with this M4E1 threaded upper receiver?
It includes the port door and forward assist installed. The charging handle and bolt carrier group are not included.
Is this upper receiver ready to use as a complete upper?
It is assembled, but it is not complete by itself because it does not include a charging handle or bolt carrier group.
What features does the M4E1 upper receiver have?
Listed features include an enhanced forging with a billet look, a new picatinny profile that blends with Enhanced Series Handguards, M4 feedramps, .250 takedown pin holes, and laser engraved T-marks.
What caliber is this upper receiver made for?
The product title identifies it as a 350 Legend assembled upper receiver.
Who makes this upper receiver?
The manufacturer listed is Aero Precision.