Over 300,000 customers - we say thank you!

40,000+ products for hunting and shooting sports

The Aero Precision M4E1 .300 Blackout Upper Receiver offers a customizable AR build with various barrel lengths, M-LOK handguards, and a sleek black finish.

AERO PRECISION M4E1 .300 BO ASSEMBL UPPER RCVR M4 8" BBL PISTOL-LENGTH BLK

815421022438 100025512

Filters:

Variations
Filters:
Variations:

Variations:

Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 8'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025512
Not available
719.9 GBP 0 £719.90 *
Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 16'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025514
Not available
799.9 GBP 0 £799.90 *
Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 10'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025513
Not available
739.9 GBP 0 £739.90 *
719.9 799.9 3 GBP
719.9 GBP £719.90

Prices inclusive of duty & VAT.

Product no.: 100025512

Mfr. No.: APAR640211M1

815421022438 From Aero Precision, the AR-15 M4E1 .300 Blackout Assembled Upper Receivers. Chambered in 300 Blackout, the upper is finished with black anodizing and available in three lengths, each with different length handguards. This upper does not come with the charging handle or bolt carrier group, allowing the user to personalize their upper receiver even more! The Aero Precision Assembled Upper Receiver also features: M-LOK EM-7 7” for 8” barrel, 9” handguard for 10” barrel, 15” handguard for 16” barrel 8”, 10”, and 16” carbine length chrome moly barrel Pistol length gas system w/ low profile gas block Standard A2 flash hider - not pinned or welded Bolt Carrier Group and Charging Handle are NOT included Made in the USA The Aero Precision AR-15 8", 10", or 16” Assembled Upper Receiver is a great choice for your next AR-15 build! The flash hider that comes with this complete 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.
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.
719.9 799.9 3 GBP
Description Specification Customers reviews Accessories

AERO PRECISION M4E1 .300 BO ASSEMBL UPPER RCVR M4 8" BBL PISTOL-LENGTH BLK

719.9 GBP £719.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Description:

Elevate Your AR Pistol Build with Precision and Style

Introducing the M4E1 ASSEMBLED UPPER RECEIVER .300 BLACKOUT BLACK from AERO PRECISION, designed for enthusiasts looking to customize their AR-15 platform.

Product Features:

  • Enhanced Tactical Upper: Perfect for AR Pistol / SBR / Carbine builds.
  • Chambered in .300 Blackout: Ideal for versatile shooting applications.
  • Black Anodized Finish: Durable and sleek appearance.
  • Multiple Handguard Lengths:
    • 7” M-LOK EM-7 for 8” barrel
    • 9” handguard for 10” barrel
    • 15” handguard for 16” barrel
  • Chrome Moly Barrel Options: Available in 8”, 10”, and 16” carbine lengths.
  • Pistol Length Gas System: Features a low profile gas block for optimal performance.
  • Standard A2 Flash Hider: Not pinned or welded for easy customization.
  • Excludes Bolt Carrier Group and Charging Handle: Personalize your upper receiver to your liking.
  • Made in the USA: Quality craftsmanship and reliability.

The Aero Precision AR-15 8", 10", or 16” Assembled Upper Receiver is a superb choice for your next build. Please note, the flash hider included with this complete upper receiver is NOT pinned or welded to the barrel. As 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.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Aero Precision M4E1 Assembled Upper Receiver is chambered in .300 Blackout, does not include a bolt carrier group or charging handle, and allows for customization.
  2. It comes in three lengths with corresponding handguards and features a pistol-length gas system and standard A2 flash hider that is not pinned or welded.
  3. This upper receiver is made in the USA and requires the flash hider to be pinned and welded for a rifle build to comply with the National Firearms Act.

Attributes

  • Cartridge:
    300 AAC Blackout
  • Colour:
    Black
  • Contour:
    M4
  • Finish:
    Anodized
  • Length:
    8''
  • Style:
    Assembled
  • Twist:
    1-7
  • Weapon type:
    AR-15
  • Delivery weight: 1.429kg
  • Shipping height: 108mm
  • Shipping width: 114mm
  • Shipping length: 625mm
  • UPC: 815421022438

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (0)

0 / 5

Variations:

Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 8'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025512
Not available
719.9 GBP 0 £719.90 *
Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 16'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025514
Not available
799.9 GBP 0 £799.90 *
Cartridge: 300 AAC Blackout Color: Black Contour: M4 Finish: Anodized Length: 10'' Make: AR-15 Style: Assembled Twist: 1-7 Product no.: 100025513
Not available
739.9 GBP 0 £739.90 *

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