Slick Side A1 5.56 NATO Assembled Upper Reciever Black
$202.05 at Brownells · 4 stores
In stock
Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver OD Green
Aero Precision · Upper Receiver
No ratings yetBest price
$149.99at OpticsPlanet
Out of stock Sale checked Oct 23, 2026
In stock now instead
- Slick Side A1 5.56 NATO Assembled Upper Reciever Black $202.05at Brownells
- M16 A1 5.56 NATO Assembled Upper Receiver Black $206.75at OpticsPlanet
- TRYBE Defense AR-15 5.56x45mm NATO 16in Complete Upper Receiver… $257.47at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $149.99Salechecked Oct 23, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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Price history
Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $149.99 | $149.99 | $149.99 |
Since Oct 12, 2026.
About this part
The Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver OD Green is an AR-15 complete upper receiver from Aero Precision. One store lists it, OpticsPlanet at $149.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- Aero Precision
- Color
- OD Green
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver OD Green. Machined from custom 7075-T6 aluminum forgings this upper receiver is compatible with mil-spec AR15 components. Specifications for Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver: Manufacturer: Aero Precision Fabric/Material: 7075-T6 Aluminum Caliber: 5.56x45mm NATO Gun Make: AR Platform Gun Model: AR-15 Condition: New Mount Type: Picatinny Bolt Carrier Group Included: No Charging Handle Included: No Gun Rail: Picatinny Attachment Type: Picatinny Gun Type: Rifle Features of Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver No Forward Assist Custom enhanced forging that gives the upper receiver a "billet look" while maintaining the structural integrity of a forged part. Picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards M4 Feedramps .250 takedown pin holes Package Contents: Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver Threaded For Enhanced Customizability What firearm models does the manufacturer say Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver is compatible with? The manufacturer says that Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver is compatible with AR-15Aero Precision APAR712205AC: M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver OD Green
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