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Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider Caliber: 5.56mm, Overall Length: 30 in, $65.01 Off w/ Free S&H

Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48
Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48
Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48
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Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48
Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48
2 of 2 images
Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48

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Questions & Answers
Does this come with the bolt carrier group

No, it does not come with a bcg or charging handle.

by Br. W., Verified Owner, July 20, 2025
Does this upper come with bolt carrier group and charging handle or just the upper?

Just the upper. It does NOT have the bcg or charging handle

by Br. W., Verified Owner, July 20, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
looks and feels like a very high end upper. by Rick james, Verified Owner, December 24, 2023
Great upper receiver, color is awesome too. I will be buying more uppers from aero. The free float barrel design is really nice.
1/1 found this helpful
Most Recent Reviews
Long Barrel, Tight Groups by Jimmy, Verified Owner, May 22, 2026
I have only shot about 550 rounds through this upper, but it handles so well and is very accurate! I took a fellow from my church shooting, first with handguns, and his self-defense gun was hard to keep on steel at 25 yards (very compact handgun), bu...
Read More...
Read All 2 Reviews
Caliber:
5.56mm
Overall Length:
30 in
Barrel Length:
20 in
Barrel Profile:
Government
Gas System Length:
Rifle Length
Barrel Twist Rate:
1-7
Firearms Threads Per Inch:
1/2x28
Handguard Type:
Free-Float
Muzzle Device:
A2 Flash Hider
Finish:
Anodized
Color:
Black
Gun Model:
AR-15, M4
Gas Block Journal Size-Diameter:
.075 in
Handguard Length:
15 in
Barrel Material:
416R Stainless Steel
Weight:
4 lb, 70 oz
Condition:
New
Included Accessories:
None

Code: 29D-UFH-56M20C-APAR640251M48

MPN: APAR640251M48

UPC: 840014603183

List: $675.00Save 10%
$609.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

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-E 20in 5.56 Complete Upper with Flash Hider

This Complete Upper has Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.image

WARNING: California`s Proposition 65

Specifications for Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider:

Manufacturer: Aero Precision
Caliber: 5.56mm
Overall Length: 30 in
Barrel Length: 20 in
Barrel Profile: Government
Gas System Length: Rifle Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Anodized
Color: Black
Gun Model: M4, AR-15
Fabric/Material: 4150 CrMoV, 7075-T6 Aluminum
Gas Block Journal Size-Diameter: .075 in
Handguard Length: 15 in
Handguard Style: Hybrid Rail
Gun Rail: Picatinny
Gun Type: Rifle
Gun Make: Aero Precision
Barrel Material: 416R Stainless Steel
Weight: 4 lb, 70 oz
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No
Condition: New
Included Accessories: None
Mount Type: M-LOK
Country of Origin: USA

Features of Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider

  • Laser engraved T-marks (Anodized only)
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • 1pc free float design
  • Rail is Machined from 6061-T6 Aluminum
  • 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
  • Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal
  • Gen 2 Feature - New profile for the continuous picatinny top rail
  • Government Profile
  • Rifle length gas system
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider

Package Contents:

  • Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider
  • M4E1 Enhanced Assembled Upper Receiver
  • Enhanced Handguard of Choice
  • 5.56 Rifle Length CMV Barrel
  • Low Profile Gas Block
  • Rifle Length Gas Tube

What firearm models does the manufacturer say Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider is compatible with?

The manufacturer says that Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider is compatible with AR-15, M4

Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, Black, APAR640251M48 , MPN: APAR640251M48 , UPC: 840014603183 , Code: 29D-UFH-56M20C-APAR640251M48

Aero Precision M4E1-E 20in 5.56 Complete Upper with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

  • Aero Precision M4E1-E Complete Upper, 20in 5.56 Rifle Barrel, Quantum 15in M-LOK Handguard, Anodized Black, APAR640105M48 , MPN: APAR640105M48 , Code: 29D-UFH-56M20C-APAR640105M48
  • Aero Precision M4E1-E Complete Upper, 20in 5.56 Rifle Barrel, Quantum 15in M-LOK Handguard, Flat Dark Earth, APAR640115M48 , MPN: APAR640115M48 , Code: 29D-UFH-56M20C-APAR640115M48
  • Aero Precision M4E1-E Complete Upper, 20in 5.56 Rifle Barrel, Quantum 15in KeyMod Handguard, Flat Dark Earth, APAR640015P48 , MPN: APAR640015P48 , Code: 29D-UFH-56M20C-APAR640015P48
  • Aero Precision M4E1-E Complete Upper, 20in 5.56 Rifle Barrel, Quantum 15in KeyMod Handguard, Anodized Black, APAR640005P48 , MPN: APAR640005P48 , Code: 29D-UFH-56M20C-APAR640005P48
  • Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15 Cerakote, Black, APAR640251Q48 , MPN: APAR640251Q48 , UPC: 840014603206 , Code: 29D-UFH-56M20C-APAR640251Q48
  • Aero Precision Complete Upper, M4E1-E, 5.56, 20in, Rifle Barrel, 1/7 Twist, EQ15, FDE, APAR640252Q48 , MPN: APAR640252Q48 , UPC: 840014603213 , Code: 29D-UFH-56M20C-APAR640252Q48
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Last updated 2026-09-17 UTC.