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Questions & Answers
So this is the enhanced upper? not threaded and is it gen 1 or Gen 2 Expert Answer

These Aero Precision M4E1 AR-15 5.56 Mid Barrel Complete Upper Receivers are the enhanced uppers. They are threaded and have the Gen 2 Enhanced Handguards.

by Hunter, Gear Expert, October 25, 2022
Is it 14.5 with the flash hider or 14.5 w/o the A2 Manufacturer Answer

Without the muzzle device.

by Aero Precision USA, Manufacturer, July 20, 2022
Customer Reviews
Helpful Positive Review
Aero Precision Full Upper by Matt, Verified Owner, December 8, 2023
This is an initial review as I just got the thing a couple hours ago. May add more once I do accuracy testing at the range. ...
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1/1 found this helpful
Helpful Positive Review
Excellence, even on a budget by Andy R., Verified Owner, May 17, 2024
What a fantastic upper at a budget friendly price. I am so glad I decided to purchase this upper. I got the black 15” M-LOK hand guard version. Fit and finish is superb. Some reviewers mentioned that the hand guard was too thick, but if you shot and ...
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1/1 found this helpful
Helpful Positive Review
Everything I was hoping for by James Watkins, Verified Owner, July 11, 2022
I got the FDE one.. put the build together and couldn’t be happier. Only a few hundred rounds through it so far at the range. It looks good and performs great. Exactly what I was looking for. A frien got the black one and I loved it, so ordered one i...
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1/1 found this helpful
Helpful Positive Review
M4e1 Rocks! by ArmyVet212, Verified Owner, October 11, 2019
I purchased the 16in Mid Gas Barrel and could not be happier. This upper is built to the likes of more expensive brands. Optics Planet.com actually beat the price I had found this upper on other sites including Aero Precision. If You are looking for...
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Well built and quite nice looking. by TZ23, Verified Owner, April 14, 2021
Quick run down, as I haven't gotten to actually get out to a range yet to evaluate performance: Pros - 1. This thing's robust. Great finish on the cerakote and everything is tightened down properly, as you'd expect from Aero. 2. Barrel doesn't hav...
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Good bang for your buck by Bobby Silva, Verified Owner, August 23, 2020
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Product Info for Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider

Aero Precision makes a wide variety of AR15 Upper Receivers, and the M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider is an amazing option. Designed to give you the full M4 package in a lightweight, durable design, the Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider comes with everything you need to start shooting as soon as you attach it to your lower receiver. It even has a flash hider to help control muzzle flash and muzzle rise when you're shooting, making you harder to spot and keeping your shots true. The Picatinny rails and M-LOK attachment ports provide plenty of space for a rifle scope, weapon light, laser sight, foregrip, and plenty of other attachments, so you can customize the firearm easily. If you've been looking to build a new AR15, pick up the Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider today.image

Specifications for Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider:

Manufacturer: Aero Precision
Caliber: 5.56x45mm NATO
Overall Length: 26 in
Barrel Length: 16 in
Barrel Profile: Government
Gas System Length: Mid Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: AR-15, M16
Fabric/Material: 7075-T6 forged aluminum
Handguard Length: 15 in
Handguard Style: M-LOK w/ Top Picatinny Rail System
Gun Rail: M-LOK
Gun Type: Rifle
Gun Make: Aero Precision, AR Platform
Barrel Material: 4150 Chrome Moly Vanadium
Gas Block Journal Size-Length: 0.75 in
Weight: 48.5 oz
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No
Condition: New
Threads per Inch: 1/2x28
Country of Origin: USA

Features of Aero Precision M4E1 AR-15 5.56 Mid Barrel Complete Upper Receiver with Flash Hider:

  • Forged from 7075 T6 aluminum.
  • Precision machined to M4E1 specs.
  • M4 feedramps.
  • Matte black hard coat anodized Mil 8625 Type 3 Class 2.
  • Laser engraved T-marks (Anodized only).
  • Comes assembled, with port door and forward assist installed.
  • Handguard mounting platform is forged into the receiver.
  • Works with Aero Precision handguards but also fits most BAR-system handguards.

Features of Gen 2 Enhanced Handguard:

  • 1pc free float design.
  • Built in anti-rotation tabs.
  • Scalloped rails.
  • Continuous top rail.
  • 1.78" inside diameter fits most muzzle devices and 1.5" suppressors.
  • Compatible with low profile gas blocks.
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions.
  • Additional milling along flats to aid with gripping and add visual appeal.
  • New profile for the continuous picatinny top rail.

Features of 16in 5.56 Mid-Length Barrel:

  • 5.56 Nato Midlength, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled.
  • .750 gas block journal.
  • Midlength gas system, .0785 gas port.
  • M4 Feed Ramp Extension.
  • HP and MPI tested.
  • Standard A2 flash hider.

Package Contents:

  • Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider
  • Enhanced Handguard
  • 5.56 Mid-Length CMV Barrel
  • Low Profile Gas Block and Mid Length Gas Tube
  • Barrel nut and wrench

Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision M4E1, AR-15, 5.56x45mm NATO, 16in, M-LOK Upper Receiver, Mid Length Barrel, 1-7 Twist, 1/2x28, A2 Flash Hider, 15in M-LOK Handguard, No BCG/CH, Anodized, Black, APAR640251M7 , MPN: APAR640251M7 , UPC: 815421023305 , Code: 29D-UFH-M4E1CMB-APAR600251M7
  • Aero Precision M4E1, AR-15, 5.56x45mm NATO, 16in, M-LOK Upper Receiver, Mid Length Barrel, 1-7 Twist, 1/2x28, A2 Flash Hider, 15in M-LOK Handguard, No BCG/CH, Cerakote, Flat Dark Earth, APAR640252M7 , MPN: APAR640252M7 , UPC: 815421023480 , Code: 29D-UFH-M4E1CMB-APAR600252M7

Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 12 in Quad Rail Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640232Q7 , MPN: APAR640232Q7-DEMO , Code: 29D-UFH-M4E1CMB-APAR600232Q7-DEMO
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 12 in KeyMod Handguard, No BCG/CH, Anodized, Black, APAR640231P7 , MPN: APAR640231P7 , UPC: 815421022964 , Code: 29D-UFH-M4E1CMB-APAR600231P7
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 15 in KeyMod Handguard, No BCG/CH, Anodized, Black, APAR640251P7 , MPN: APAR640251P7 , UPC: 815421023350 , Code: 29D-UFH-M4E1CMB-APAR600251P7
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 12 in KeyMod Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640232P7 , MPN: APAR640232P7 , UPC: 815421023183 , Code: 29D-UFH-M4E1CMB-APAR600232P7
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 15 in KeyMod Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640252P7 , MPN: APAR640252P7 , UPC: 815421023558 , Code: 29D-UFH-M4E1CMB-APAR600252P7
  • DEMO, Aero Precision M4E1 Mid Barrel Complete Upper Receiver w/Flash Hider, AR-15, 5.56x45mm NATO, 16in Mid Length Barrel, 15in M-LOK Handguard, No BCG/CH, Anodized, Black, APAR640251M7 , MPN: APAR640251M7-DEMO , Code: 29D-UFH-M4E1CMB-APAR600251M7-DEMO
  • DEMO, Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 16 in Mid Length Barrel, 15 in M-LOK Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640252M7 , MPN: APAR640252M7-DEMO , Code: 29D-UFH-M4E1CMB-APAR600252M7-DEMO
  • Aero Precision M4E1, AR-15, 5.56x45mm NATO, 16in, M-LOK Upper Receiver, Mid Length Barrel, 1-7 Twist, 1/2x28, A2 Flash Hider, 12in M-LOK Handguard, No BCG/CH, Anodized, Black, APAR640231M7 , MPN: APAR640231M7 , UPC: 815421020922 , Code: 29D-UFH-M4E1CMB-APAR600231M7
  • Aero Precision M4E1, AR-15, 5.56x45mm NATO, 16in, M-LOK Upper Receiver, Mid Length Barrel, 1-7 Twist, 1/2x28, A2 Flash Hider, 12in M-LOK Handguard, No BCG/CH, Cerakote, Flat Dark Earth, APAR640232M7 , MPN: APAR640232M7 , UPC: 815421020939 , Code: 29D-UFH-M4E1CMB-APAR600232M7
  • Aero Precision M4E1 Mid Barrel Complete Upper Receiver w/Flash Hider, AR-15, 5.56x45mm NATO, 16in Mid Length Barrel, 15in Quad Rail Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640252Q7 , MPN: APAR640252Q7 , UPC: 815421023633 , Code: 29D-UFH-M4E1CMB-APAR600252Q7
  • Aero Precision M4E1 Mid Barrel Complete Upper Receiver w/Flash Hider, AR-15, 5.56, 16in Mid Barrel, 15in M-LOK HG, No BCG/CH w/SIG ROMEO5 1x20mm Green Dot Sight, Black, APAR640251M7-KIT1 , MPN: APAR640251M7-KIT1 , Code: 29D-UFH-M4E1CMB-APAR640251M7-KIT1
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Last updated 2026-06-26 UTC.