Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Complete Ar-15 M4a1 Clone Lower Reciever - M4a1 Clone Complete Lower Receiver For Ar-15 Black

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

Custom Engraved

Aero Precision AR15 Gen 2

Markings Include

Property of U.S.A., MOD M4

Serial Number

Designation and Safe/Semi/Auto safety selector

Comes Standard

A standard collapsible stock and

Includes Lower

Parts kit, receiver extension, and

$304.99
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SKU: 430103911

Overview

Built for an M4A1-style AR-15 clone, this complete lower receiver provides a ready-to-assemble foundation for a dedicated build. It includes the lower receiver, standard collapsible stock, standard A2 grip, lower parts kit, receiver extension, and carbine buffer kit, with the components already installed. The custom engraving and markings give the receiver a purpose-built clone appearance, while the Gen 2 lower receiver adds an upper tension screw for fine-tuning fit. This is a practical choice for builders focused on a complete lower with the correct visual details for a clone project.

Why Hunters Choose the Aero Precision

Complete Lower

Custom Aero Precision engraving

Includes Standard

Collapsible stock, A2 grip, lower

Gen 2

Lower receiver includes an upper

Markings Include

Property of U.S.A., MOD M4

Installed Components

Simplify setup for a complete

Key Features

  • Custom engraved Aero Precision AR15 Gen 2 lower receiver for an M4A1 clone build.
  • Markings include Property of U.S.A., MOD M4 CARBINE, and CAL. 5.56MM.
  • Serial number designation and Safe/Semi/Auto safety selector markings are included.
  • Comes with a standard collapsible stock and standard A2 grip installed.
  • Includes lower parts kit, receiver extension, and carbine buffer kit.
  • Gen 2 lower receiver features an upper tension screw for fine tuning.

Best Used For

  • M4A1 clone builders wanting a complete lower with period-style markings and engraving
  • AR-15 owners seeking a preassembled lower receiver with included stock, grip, and parts kit
  • Users who want a Gen 2 lower with an upper tension screw for fine-tuning fit
  • Collectors focused on a black lower receiver configured for a classic M4A1-style build

Pros

  • Complete lower receiver for an M4A1 clone build, with custom Aero Precision engraving.
  • Includes standard collapsible stock, A2 grip, lower parts kit, receiver extension, and carbine buffer kit.
  • Gen 2 lower receiver includes an upper tension screw for fine-tuning fit.
  • Markings include Property of U.S.A., MOD M4 CARBINE, CAL. 5.56MM, and safe/semi/auto selector markings.
  • Installed components simplify setup for a complete lower receiver package.

Considerations & Trade-offs

  • Built around an AR15 Gen 2 lower receiver, so this is a clone-focused setup rather than a blank or minimalist lower for a custom aesthetic.
  • The included standard collapsible stock and A2 grip are functional, but they are basic components rather than upgraded furniture.
  • This is a complete lower with installed parts, which simplifies assembly but leaves less room to choose each component individually.
  • The M4A1-style markings and engraving are specific to a clone build, so the appearance is intentionally specialized rather than generic.

Suggested Comparisons

  • AR-15 lower receivers
  • Complete lower receiver assemblies
  • M4A1 clone build components
  • AR-15 lower parts kits

Suggested Accessories

  • Lower parts kit
  • Receiver extension
  • Carbine buffer kit
  • AR-15 upper receiver

Frequently Asked Questions

What comes included with the complete lower receiver package?

The listed package includes the M4A1 Clone Lower Receiver, standard collapsible stock, standard A2 grip, lower parts kit, receiver extension, and carbine buffer kit. The description says these parts are installed on the Gen 2 lower receiver.

What markings are on the lower receiver?

The description lists custom Aero Precision logo engraving, along with markings that include "Property of U.S.A.," "MOD M4 CARBINE," "CAL. 5.56MM," serial number designation, and Safe/Semi/Auto safety selector markings.

Is this intended for an M4A1 clone build?

Yes. The product is described as a complete lower receiver for an M4A1 clone build.

What Gen 2 feature is mentioned on this lower receiver?

The Gen 2 lower receiver includes an upper tension screw, which the description says allows users to fine tune the fit.

Who makes this lower receiver?

The manufacturer listed is Aero Precision.