Over 300,000 customers - we say thank you!

40,000+ products for hunting and shooting sports

The Aero Precision M4E1 Upper Receiver features an ATLAS R-ONE Handguard, durable construction, and compatibility with various barrel lengths for versatile performance.

AERO PRECISION M4E1 5.56 ASSEMBLD UPPER M4 16" BBL MID-LENGTH THREADED BLK

840014602056 100054460

Filters:

Variations
Filters:
Variations:

Variations:

Cartridge: 5.56 mm NATO Color: Black Contour: CMV Finish: Anodized Length: 16'' Make: AR-15 Style: Complete Twist: 1-7 Product no.: 100054460
Not available
813.9 GBP 0 £813.90 *
Cartridge: 5.56 mm NATO Color: Black Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Style: Complete Product no.: 100036053
Not available
589.9 GBP 0 £589.90 *
Cartridge: 5.56 mm NATO Color: Flat Dark Earth Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Style: Complete Product no.: 100036054
Not available
619.9 GBP 0 £619.90 *
Cartridge: 5.56 mm NATO Color: Black Contour: CMV Finish: Anodized Length: 18'' Make: AR-15 Style: Complete Twist: 1-7 Product no.: 100054461
Not available
832.6 GBP 0 £832.60 *
Cartridge: 5.56 mm NATO Color: Black Contour: Government Finish: Anodized Length: 12'' Make: AR-15 Style: Complete Product no.: 100042527
Not available
776.4 GBP 0 £776.40 *
589.9 832.6 5 GBP
813.9 GBP £813.90

Prices inclusive of duty & VAT.

Product no.: 100054460

Mfr. No.: APAR700705M7

840014602056 This assembled upper includes Aero Precision’s 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. Their 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. INCLUDES: M4E1 Threaded Assembled Upper Receiver - Anodized Black or Cerakote FDE depending on model. 15" ATLAS R-ONE M-LOK Handguard with 16"CMV Barrel OR 15" ATLAS R-ONE M-LOK Handguard 18" Rifle Length CMV Barrel OR 10” ATLAS R-ONE M-LOK Handguard 10.5” Carbine Length M4 Barrel Low Profile Gas Block and Mid Pencil, Mid-Length, or Rifle Length Gas Tube depending on configuration Product comes assembled This assembled upper does not include BCG or Charging Handle. The muzzle brake that comes with this assembled upper receiver is NOT pinned nor welded to this barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16"" as defined by the ATF for a rifle build. 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 10” and 11.5 ” Carbine Length Barrel Features 5.56 Nato, carbine gas system, 1/7 twist, 4150 CrMoV QPQ .750 gas block journal Carbine gas system .0785" gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider 14.5” and 16" Mid-Length Barrel Features: Mid-length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled .750 gas block journal Mid-length gas system, .0785 gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider 16" Mid-Length Barrel Features: 16" Mid-length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled .750 gas block journal Mid-length gas system, .0785 gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider 18" Rifle Length Barrel Features: 18" Rifle Length Barrel 4150 CrMoV w/ QPQ finish 1/7 twist .750 gas block journal Rifle length gas system M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider
Not available

Not available.

No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
589.9 832.6 5 GBP
Description Specification Customers reviews Accessories

AERO PRECISION M4E1 5.56 ASSEMBLD UPPER M4 16" BBL MID-LENGTH THREADED BLK

813.9 GBP £813.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Description:

Introducing the M4E1 5.56MM Assembled Upper Receiver with ATLAS R-ONE Handguard!

This assembled upper includes Aero Precision’s new ATLAS R-ONE Handguard, designed with size and weight in mind while providing ample space for attachments. The proprietary ATLAS attachment system offers a durable and dependable mounting platform, maintaining a slim profile without compromising strength and stability.

Product Features:

  • M4E1 Threaded Assembled Upper Receiver - Available in Anodized Black or Cerakote FDE
  • 15" ATLAS R-ONE M-LOK Handguard with 16" CMV Barrel
  • 15" ATLAS R-ONE M-LOK Handguard with 18" Rifle Length CMV Barrel
  • 10” ATLAS R-ONE M-LOK Handguard with 10.5” Carbine Length M4 Barrel
  • Low Profile Gas Block and Mid-Length or Rifle Length Gas Tube depending on configuration
  • Product comes fully assembled
  • Note: This assembled upper does not include BCG or Charging Handle
  • The muzzle brake is NOT pinned nor welded to the barrel

M4E1 Threaded Upper Receiver Features:

  • Enhanced forging for a "billet look"
  • New picatinny profile that seamlessly blends with 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

Barrel Features:

  • 10” and 11.5” Carbine Length Barrel: 5.56 Nato, carbine gas system, 1/7 twist, 4150 CrMoV QPQ
  • 14.5” and 16" Mid-Length Barrel: Mid-length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • 18" Rifle Length Barrel: 18" Rifle Length Barrel, 4150 CrMoV with QPQ finish, 1/7 twist

All barrels are HP and MPI tested and come with a standard A2 flash hider. Ensure your build meets the necessary specifications as defined by the ATF for compliance.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The complete upper includes Aero Precision's M4E1 Threaded Upper Receiver, ATLAS R-ONE 15" M-LOK Handguard, and a choice of a 16" or 18" 5.56 CMV barrel, with mid-length or rifle length gas systems.
  2. It features a new enhanced forging with a billet look, a full top picatinny rail, and quick disconnect sling sockets at multiple positions, but does not include BCG or Charging Handle.
  3. The product comes assembled with a standard A2 flash hider, but the muzzle brake is not pinned nor welded, requiring modification to comply with the National Firearms Act for a rifle build.

Attributes

  • Cartridge:
    5.56 mm NATO
  • Colour:
    Black
  • Contour:
    CMV
  • Finish:
    Anodized
  • Length:
    16''
  • Style:
    Complete
  • Twist:
    1-7
  • Weapon type:
    AR-15
  • Delivery weight: 1.864kg
  • Shipping height: 95mm
  • Shipping width: 102mm
  • Shipping length: 768mm
  • UPC: 840014602056

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (0)

0 / 5

Variations:

Cartridge: 5.56 mm NATO Color: Black Contour: CMV Finish: Anodized Length: 16'' Make: AR-15 Style: Complete Twist: 1-7 Product no.: 100054460
Not available
813.9 GBP 0 £813.90 *
Cartridge: 5.56 mm NATO Color: Black Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Style: Complete Product no.: 100036053
Not available
589.9 GBP 0 £589.90 *
Cartridge: 5.56 mm NATO Color: Flat Dark Earth Contour: Government Finish: Anodized Length: 11.5'' Make: AR-15 Style: Complete Product no.: 100036054
Not available
619.9 GBP 0 £619.90 *
Cartridge: 5.56 mm NATO Color: Black Contour: CMV Finish: Anodized Length: 18'' Make: AR-15 Style: Complete Twist: 1-7 Product no.: 100054461
Not available
832.6 GBP 0 £832.60 *
Cartridge: 5.56 mm NATO Color: Black Contour: Government Finish: Anodized Length: 12'' Make: AR-15 Style: Complete Product no.: 100042527
Not available
776.4 GBP 0 £776.40 *

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Back to top