RiflesAero PrecisionSold by Guns.com

Aero Precision

AERO PRECISION M4E1

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Custom Build

Aero AR15 M4E1 upper and

Includes Two

Uppers: one in 5.56 and

5.56 Upper

Features an 18-inch Bartlein carbon

6.5 Grendel

Upper features an 18-inch Bartlein

Package Includes

Aero AR15 M16 BCGs, gas

$3700.99
View on Guns.com

You'll be taken to Guns.com to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: 657427

Overview

This custom-built Aero Precision M4E1 package is set up for hunters and shooters who want a ready-made rifle system with two upper configurations in one purchase. It includes one upper in 5.56 and another in 6.5 Grendel, along with matched components such as Aero BCGs, rifle-length gas systems, charging handles, and a free-float tube setup in FDE. The 18-inch Bartlein carbon fiber barrels and the included muzzle brake on the 6.5 Grendel upper give the package a purpose-built feel for users who want a more specialized setup without piecing everything together themselves. Because this is a custom build with some component details not fully confirmed in the listing, buyers should review the included parts carefully before committing.

Why Hunters Choose the Aero Precision

Includes Two

Complete uppers, one in 5.56

Bartlein Carbon

Fiber barrels are listed for

18-inch Barrels

Rifle-length gas systems are specified

Aero M4e1

Upper and free float tube

Package Includes

Charging handles, BCGs, gas blocks,

Key Features

  • Custom build Aero AR15 M4E1 upper and free float tube set in FDE.
  • Includes two uppers: one in 5.56 and one in 6.5 Grendel.
  • 5.56 upper features an 18-inch Bartlein carbon fiber barrel in Coyote Tan.
  • 6.5 Grendel upper features an 18-inch Bartlein carbon fiber barrel in Coyote Tan.
  • Package includes Aero AR15 M16 BCGs, gas blocks, rifle-length gas tubes, and charging handles.
  • Luthe AR FDE MBA-1 rifle buttstock with buffer assembly is included.
  • PVA Jet Blast muzzle brake is included on the 6.5 Grendel upper.

Best Used For

  • Hunters wanting a custom two-upper setup for switching between 5.56 and 6.5 Grendel.
  • Users building a rifle system around Aero M4E1 components and free-float configuration.
  • Shooters who prefer an included flat trigger with minimal reset, though the brand is unconfirmed.
  • Those seeking a complete custom package with upper assemblies, charging handles, and muzzle brake included.

Specifications

5 56 Barrel BrandBartlein
5 56 Barrel FinishCoyote Tan
5 56 Barrel Length18"
5 56 Barrel MaterialCarbon Fiber
5 56 BcgAero AR15 M16 BCG
5 56 Gas BlockAero Gas block .875
5 56 Gas TubeRifle length Gas tube and Pin
5 56 Thread Pitch1/28
5 56 Twist Rate1-8
6 5 Grendel Barrel BrandBartlein
6 5 Grendel Barrel FinishCoyote Tan
6 5 Grendel Barrel Length18"
6 5 Grendel Barrel MaterialCarbon Fiber
6 5 Grendel BcgAero AR15 M16 BCG
6 5 Grendel Gas BlockAero Gas block .875
6 5 Grendel Gas TubeRifle length Gas tube and Pin
6 5 Grendel Thread Pitch5/8x24
6 5 Grendel Twist Rate1-8
Buffer AssemblyIncluded
Caliber 15.56
Caliber 26.5 Grendel
Charging Handle 1Charge handle with Tac latch
Charging Handle 2Geissele Airborne Charging handle
HandguardFree Float Tube
Muzzle BrakePVA Jet Blast Muzzle Brake
Number Of Uppers2
StockLuthe AR FDE MBA-1 Rifle buttstock
TriggerBelieved to be Geissele, not confirmed
Trigger ResetLittle to no reset
Trigger TypeFlat trigger
Upper ColorFDE
Upper IncludedYes
Upper ReceiverAero AR15 M4E1

Pros

  • Includes two complete uppers, one in 5.56 and one in 6.5 Grendel.
  • Bartlein carbon fiber barrels are listed for both uppers.
  • 18-inch barrels with rifle-length gas systems are specified in the build.
  • Aero M4E1 upper and free float tube set included in FDE.
  • Package includes charging handles, BCGs, gas blocks, and muzzle brake.
  • Luthe AR MBA-1 rifle buttstock with buffer assembly is included.

Considerations & Trade-offs

  • This is a custom-built package with multiple components, so fit, configuration, and serviceability should be reviewed carefully before purchase.
  • The trigger brand is not confirmed in the provided data, so buyers should treat that detail as unverified.
  • The package includes two different uppers, one in 5.56 and one in 6.5 Grendel, which adds versatility but also means separate setup and ammunition considerations.
  • Several component details are listed, but the overall build is presented as custom assembled rather than a standardized factory configuration.

Suggested Comparisons

  • AR-15 upper receiver assemblies
  • Complete rifle builds
  • Precision rifle components
  • 6.5 Grendel uppers

Suggested Accessories

  • Rifle sling
  • Magazines
  • Cleaning kit
  • Optics mount

Frequently Asked Questions

What comes in this package?

The listing describes a custom-built Aero AR15 M4E1 upper and free float tube set in FDE, with two upper sets included: one in 5.56 and one in 6.5 Grendel.

Is this a complete rifle or just upper components?

The description presents it as a custom build package with upper assemblies and related components. It does not clearly state that it is a complete rifle, so that cannot be confirmed from the provided data.

What calibers are included?

Two calibers are listed: 5.56 and 6.5 Grendel.

What barrel details are provided?

The 5.56 upper is listed with an 18" Bartlein AR15 barrel, 1-8 twist, carbon fiber, in Coyote Tan, threaded to 1/28. The 6.5 Grendel upper is also listed with an 18" Bartlein carbon fiber barrel, 1-8 twist, in Coyote Tan, threaded to 5/8x24.

Is the trigger brand confirmed?

No. The short description says the trigger is believed to be a Geissele trigger, but that is not confirmed.