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New! Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver Up to 10% Off w/ Free S&H — 3 models

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, Fluted ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M51
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
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Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73
2 of 5 images
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, Fluted ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M51
3 of 5 images
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, Fluted ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M51
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
4 of 5 images
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73
5 of 5 images
Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73

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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.

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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, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver

This complete upper includes our new 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

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Specifications for Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver:

Manufacturer: Aero Precision
Caliber: .223 Wylde
Barrel Length: 18 in
Barrel Profile: SPR
Gas System Length: Rifle 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
Fabric/Material: 7075-T6 Aluminum
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Handguard Style: M-LOK ATLAS R-ONE
Gun Rail: M-LOK
Gun Type: Rifle
Gun Make: AR Platform
Weight: 68.5 oz
Magazine Included: No
Condition: New
Country of Origin: USA
Threads per Inch: 1/2x28

Features of Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver:

  • 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
  • 18" .223 Stainless Steel Rifle Length Barrel Features:
  • .223 Wylde 18" Rifle Length Barrel, 1/8 Twist
  • 416R Stainless Steel
  • Bead Blasted 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, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver
  • M4E1 Threaded Assembled Upper Receiver
  • ATLAS R-ONE Handguard of choice
  • 18" .223 Wylde Rifle Length Stainless Steel Barrel
  • Low Profile Gas Block and Rifle Length Gas Tube
  • Product comes assembled

What firearm models does the manufacturer say Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver is compatible with?

The manufacturer says that Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver is compatible with AR-15

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver Orderable Models

List of Orderable Models

  • Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M73 , MPN: APAR700705M73 , UPC: 840014613205 , Code: 29D-UFH-JOZQSAZ-APAR700705M73
  • Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR700715M73 , MPN: APAR700715M73 , UPC: 840014613212 , Code: 29D-UFH-JOZQSAZ-APAR700715M73
  • Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, Fluted ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M51 , MPN: APAR700705M51 , UPC: 840014602834 , Code: 29D-UFH-JOZQSAZ-APAR700705M51

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch SS QPQ ATLAS R-ONE M-LOK Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ ATLAS R-ONE M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR700705M42 , MPN: APAR700705M42 , UPC: 840014602209 , Code: 29D-UFH-JOZQSAZ-APAR700705M42
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Last updated 2026-07-07 UTC.