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Questions & Answers
Is the flash hider welded on this barrel?

Mine did not have anything welded on.

by Nick Nickname, Verified Owner, November 12, 2025
What ammo will this upper shoot beside 223 Wilde?

.223 Wylde is a chambering, not a round. It allows the barrel to fire both .223 Rem and 5.56

by Dux Bellorum, Verified Owner, July 23, 2025
Customer Reviews
Most Recent Reviews
aero precision upper by Tevin shaw, Verified Owner, August 9, 2025
Great product, was in stock and arrived fast . At first I had mixed feelings about when the product would arrive but it arrived within 6 business days
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Product Info for Aero Precision M4E1-E 18in .223 Wylde Complete Upper with Flash Hider

This 18in Complete Upper includes 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 18in .223 Wylde Complete Upper with Flash Hider:

Manufacturer: Aero Precision
Caliber: .223 Wylde
Barrel Length: 18 in
Barrel Profile: SPR
Gas System Length: Mid Length
Barrel Twist Rate: 1-8
Firearms Threads Per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: AR-15, M4
Fabric/Material: 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: 68.5 oz, 4 lb
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 18in .223 Wylde Complete Upper Receiver with Flash Hider

  • Forged from 7075 T6 aluminum
  • Precision machined to M4E1 specs
  • M4 feedramps
  • Matte black hard coat Anodized Blackd Mil 8625 Type 3 Class 2
  • Laser engraved T-marks
  • 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
  • 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
  • .223 Wylde 18'' Mid Length Barrel, 1/8 Twist
  • QPQ Corrosion Resistant Finish
  • .750 gas block journal
  • Rifle length gas system
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider

Package Contents:

  • Aero Precision M4E1-E 18in .223 Wylde Complete Upper Receiver with Flash Hider
  • M4E1 Enhanced Upper Receiver
  • Enhanced M-LOK Handguard of choice
  • .223 Wylde Stainless Steel QPQ Barrel
  • Mid-Length
  • Pinned Low Profile Gas Block
  • Mid-Length Gas Tube
  • A2 Flash Hider

Aero Precision M4E1-E 18in .223 Wylde Complete Upper with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision Complete Upper, M4E1-E, .223 Wylde, 18in, Mid-Length, EQ15 Cerakote, FDE Cerakote, APAR600252Q73 , MPN: APAR600252Q73 , UPC: 840014613175 , Code: 29D-UFH-NMM18C-APAR600252Q73
  • Aero Precision Complete Upper, M4E1-E, .223 Wylde, 18in, Mid-Length, EQ15 Anodized, Black, APAR600251Q73 , MPN: APAR600251Q73 , UPC: 840014613168 , Code: 29D-UFH-NMM18C-APAR600251Q73
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