Aero Precision M4E1 .350 Legend Upper Features
This upper is built around Aero’s M4E1 threaded upper receiver, which boasts a billet-style aesthetic and enhanced forging with laser-engraved T-marks, forward assist, and port door pre-installed. The included ATLAS R-ONE handguard provides a slim, lightweight profile with full Picatinny top rail, QD sling sockets, and robust compatibility with low-profile gas blocks and mil-spec AR-15 parts.
The 20-inch .350 Legend barrel is crafted from 4150 CMV steel, featuring a DMR profile, carbine-length gas system, and M4 feed ramps for reliable cycling. It’s HP and MPI tested for durability and capped with a standard A2 flash hider. This upper is ideal for straight-wall cartridge hunting setups or anyone wanting serious knockdown power in a precision platform.
Aero Precision M4E1 .350 Legend Upper Specifications
- Manufacturer: Aero Precision
- Model: M4E1 Assembled Upper
- Series: .350 Legend
- Caliber: .350 Legend
- Barrel Length: 20″
- Barrel Material: 4150 Chrome Moly Vanadium (CrMoV)
- Barrel Profile: DMR
- Gas System: Carbine-Length
- Gas Block Journal: .750
- Gas Port Size: .0785
- Twist Rate: 1:16
- Feed Ramps: M4
- Flash Hider: A2 Style (9mm)
- Receiver: M4E1 Threaded Upper (FDE Finish)
- Handguard: ATLAS R-ONE (Full Top Rail, QD Sockets)
- Inside Diameter: 1.3″
- Outside Diameter: 1.5″
- Construction: Assembled (No BCG or Charging Handle)
- Compatibility: Mil-Spec AR-15 Lowers and Components
| Barrel Length | 20 |
|---|---|
| Caliber | .350 Legend |
| Condition | New in Box |
| Finish Per Color | Flat Dark Earth |
| Manufacturer | Aero Precision |
| Manufacturer Part Number | APAR700716M100 |
| Model | M4E1 Assembled Upper |
| Type | Uppers |
| UPC | 840014617715 |
