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Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver Up to 19% Off, Blazin' Deal w/ Free S&H — 3 models

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
1 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
2 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
3 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
4 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
5 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
6 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
7 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
8 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68
9 of 9 images
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68

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Questions & Answers
The Epsilon 556SL is insanely loud. Any ideas on making it quieter? Love the upper, btw Expert Answer

I would recommend switching to a standard A2 Birdcage flash hider or purchasing a muzzle device that allows you to equip a suppressor. Email us at Techsales@opticsplanet.com for further assistance.

by Ethan, Gear Expert, December 14, 2022
Can you attach a flash oppressor to the muzzle that is pinned on this barrel? Expert Answer

The Aero Precision M4E1 Threaded Complete Upper Receivers come with a VG6 Precision Epsilon 556SL. I am unaware of a flash oppressor that will attach to this muzzle device.

by Hunter, Gear Expert, July 14, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Great Upper by captainfish, Verified Owner, September 6, 2020
This upper is great shoots really nice and feels good. Quality is excellent!! Fit and finish top notch had no problems and was a nice tight fit on a Spikes stripped lower, couldn't have asked for better fit.
1/1 found this helpful
Helpful Positive Review Great upper by DKB, October 26, 2019
Everything is tight and well made. Small handrail provides very comfortable grip, and removing the flat top on most of the rail cuts a good amount of weight. I put this on a lightweight build, and have not been disappointed.
1/1 found this helpful
Most Recent Reviews 14.5" aero upper by Pmerc, Verified Owner, November 22, 2024
The slim rail is one of the most comfortable feeling grips from aero, muzzle device also provides a very slight difference to recoil and flash. highly recommend.
Most Recent Reviews cant go wrong with a 14.5 pin and welded upper by Just a normal guy with a gun, Verified Owner, October 25, 2024
My second 14.5 aero upper, can’t go wrong. Aero thought ahead by using a slim muzzle break so you can swap out different gas blocks and hand gaurds. If you don’t want a tax stamp, 14.5 is the way to go. With pin and welded upper you get a shorter pro...
Read More...
Most Recent Reviews Highly Recommend by O, January 28, 2024
Always recommend Awro parts and best prices from optics planet!
Most Recent Reviews Can't go wrong with this one by E man, Verified Owner, November 24, 2023
Absolutely love it. Great quality, the best upper you can get in the price range. Perfect when you want a 14.5" barrel and don't want to SBR it.
Read All 6 Reviews

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Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
3 Models Available
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver

This complete upper includes our ATLAS S-ONE Handguard! 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

We've taken the pain out of building a legal 14.5in rifle build. These pinned and welded 14.5in complete uppers feature an Epsilon 556SL that is permanently affixed to the muzzle providing an overall legal length of 16in. Worried you might want to change your gas block? No worries! The outer diameter of the Epsilon 556SL allows you to easily slide your gas block over the muzzle device making it easy to change or service your gas system.

If you've had a 14.5in build planned, but didn't want to deal with the hassle of getting it pinned and welded or being stuck with a specific configuration, then our 14.5 pinned and welded barrels/uppers are for you!

Specifications for Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver:

Manufacturer: Aero Precision
Caliber: 5.56x45mm NATO
Overall Length: 16 in
Barrel Length: 14.5 in
Barrel Twist Rate: 1-7
Threads per Inch: 1/2x28
Muzzle Device: Pinned VG6 Epsilon 556SL
Finish: Anodized
Color: Black
Fabric/Material: 4150 Chrome Moly Vanadium, 7075-T6 Aluminum
Handguard Length: 12 in
Gun Rail: Picatinny
Gun Type: Rifle
Included Accessories: VG6 Epsilon 556SL
Condition: New
Magazine Included: No
Country of Origin: USA

Features of Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver

  • 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
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks

Package Contents:

  • Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver
  • M4E1 Threaded Assembled Upper Receiver
  • 12in ATLAS S-ONE Handguard
  • 14.5in 5.56 CMV Barrel
  • Pinned Low Profile Gas Block and Gas Tube
  • VG6 Epsilon 556SL

Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver Orderable Models

List of Orderable Models

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M68 , MPN: APAR700304M68 , UPC: 815421028539 , Code: 29D-URC-M4E1T556UPS1-APAR700304M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68 , MPN: APAR700704M68 , UPC: 815421028546 , Code: 29D-URC-M4E1T556UPS1-APAR700704M68
Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67 , MPN: APAR700704M67 , UPC: 815421028515 , Code: 29D-URC-M4E1T556UPS1-APAR700704M67

Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS S-ONE M-LOK Handguard, Black, APAR700304M67 , MPN: APAR700304M67 , UPC: 815421028522 , Code: 29D-URC-M4E1T556UPS1-APAR700304M67
DEMO, Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2x28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68 , MPN: APAR700704M68-DEMO , Code: 29D-URC-M4E1T556UPS1-APAR700704M68-DEMO
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