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Questions & Answers
Does this comes with a bolt carrier group? Expert Answer

The bolt carrier group and charging handle are not included.

by Nick B., Gear Expert, July 21, 2021
Will the strike industries oppressor blast shield work with this upper? Manufacturer Answer

Unfortunately it will not since the inside diameter of this handguard is 1.30” and the concussion reduction device has an outside diameter of 1.55”.

by Aero Precision USA, Manufacturer, September 20, 2022
Customer Reviews
Helpful Positive Review
Great quality upper, big caveat is the handguard length. You won’t be able to change the muzzle device or use a suppressor with this one on. Ideally you want the handguard to be around 0.5” to 0.8” SHORTER than the barrel for that. I ended up swappin...
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2/2 found this helpful
Helpful Positive Review
Top Quality by Rob C, Verified Owner, August 13, 2020
Wow is all I can say. Aero Precision's quality control is second to none! Flawless upper with a beautiful flat dark earth cerakote job. Don't hold back if interested, you will not be let down with this purchase!
4/4 found this helpful
Helpful Positive Review
Great value by Jon, June 2, 2022
Aero precision is definitely producing some of the best value for the price. You can count on the quality and reliability, the feel and machining of their products are great, and you can’t beat the price. This upper is as awesome as everything else I...
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1/1 found this helpful
Helpful Positive Review
Good to go by SoRAD, March 6, 2020
This upper was on sale when I purchased. I could not build a quality 12 inch barreled upper at the price ($380) So I bought this. My first Aero upper. What drew me in was the light weight, slim profile handguard. Unfortunately the gas block sits so c...
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9/10 found this helpful
Helpful Positive Review
Do Not Hesitate by theknifeedge, Verified Owner, April 25, 2021
Aero precision makes quality parts and this upper is no exception. I bought this upper from opticsplanet while on sale for a deep discount compared to aero precision own website. While aero website had none in stock at all, opticsplanet did have them...
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1/1 found this helpful
Helpful Negative Review
If you pl on suppressing this look elsewhere. by Alias, Verified Owner, July 30, 2022
I havnt even shot this yet but there is no way you can fit any suppressor on this upper without changing the handguard. Ballistic Advantage makes a 12" handguard using the atlas barrel nut but I dont know if their 12" handguard is short enough to fi...
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1/3 found this helpful
Read All 10 Reviews
Caliber: 5.56x45mm NATO Barrel Length: 12.5 inGas System Length: Carbine Length Barrel Twist Rate: 1-7 Muzzle Device: A2 Flash Hider Finish: Anodized Color: Black Gun Model: AR-15 , M4 Condition: Factory DEMO Attachment Type: Picatinny Gun Rail: M-LOK Gun Type: Rifle Gun Make: Aero Precision , AR Platform Included Accessories: Standard Country of Origin: USA Mount Type: Picatinny

Code: 29D-UFH-AEUPATLR-APAR700704M30-DEMO

MPN: APAR700704M30-DEMO

Product No Longer Available

Product Info for Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard

This complete upper includes our ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.image

Features of Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard

  • M4E1 Threaded Upper Receiver Features:
  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed
  • ATLAS R-ONE Handguard Features:
  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3 Inside diameter
  • 1.5 Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • Learn More about our NEW ATLAS Handguards
  • 12.5" 5.56 CMV Carbine Length Barrel Features:
  • Chamber: 5.56
  • Length: 12.5"
  • Twist: 1 in 7
  • Threading: 1/2"x28
  • Material: Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas System Length: Carbine
  • Weight: 22oz
  • M4 Barrel Extension
  • HP and MPI Tested

Package Contents:

  • Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard
  • Includes:
  • M4E1 Threaded Assembled Upper Receiver
  • 12" M-LOK ATLAS R-ONE Handguard
  • 12.5" 5.56 Government Profile CMV Barrel Carbine Length
  • Low Profile Gas Block and Carbine Length Gas Tube
  • AR15 A2 Birdcage Flash Hider

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Related Products to Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard

Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Aero Precision Complete Upper Receiver M4E1-T, 5.56 NATO, 12.5in CMV Barrel, Carbine Length w/ 12in M-LOK ATLAS R-ONE Handguard, Anodized, Black, APAR700704M30 , MPN: APAR700704M30-DEMO , Code: 29D-UFH-AEUPATLR-APAR700704M30-DEMO
  • Aero Precision Complete Upper Receiver M4E1-T, 5.56 NATO, 12.5in CMV Barrel, Carbine Length w/ 12in M-LOK ATLAS R-ONE Handguard, Anodized, Black, APAR700704M30 , MPN: APAR700704M30 , UPC: 815421028645 , Code: 29D-UFH-AEUPATLR-APAR700704M30
  • DEMO, Aero Precision Complete Upper Receiver M4E1-T, 5.56 NATO, 12.5in CMV Barrel, Carbine Length w/ 12in M-LOK ATLAS R-ONE Handguard, FDE, APAR700714M30 , MPN: APAR700714M30-DEMO , Code: 29D-UFH-AEUPATLR-APAR700714M30-DEMO
  • Aero Precision Complete Upper Receiver M4E1-T, 5.56 NATO, 12.5in CMV Barrel, Carbine Length w/ 12in M-LOK ATLAS R-ONE Handguard, FDE, APAR700714M30 , MPN: APAR700714M30 , UPC: 815421028638 , Code: 29D-UFH-AEUPATLR-APAR700714M30
  • Aero Precision Complete Upper Receiver M4E1-T, 5.56 NATO w/ Sig Sauer ROMEO5 1x20mm Green Dot Sight , MPN: APAR700714M30-KIT1 , Code: 29D-UFH-AEUPATLR-APAR700714M30-KIT1
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