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Aero Precision

Ar-15 Carbine Buffer Kits - Mil-Spec Carbine Buffer Kit For Ar-15 Black

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

Complete Ar-15

Carbine buffer kit for a

Includes Mil-spec

Buffer tube machined from 7075-T6

Buffer Tube

Features slots for a six-position

Kit Also

Includes a buffer spring, end

Ar-style Firearms

Short gas systems

$56.99
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SKU: 100036679

Overview

Built for AR-15 carbine setups, this buffer kit is intended to support a more controlled shooting setup on short-gas, semi-automatic firearms where overgassing can increase wear and felt recoil. It includes the core components needed for a carbine buffer assembly, making it a practical choice for builders or owners replacing parts in an existing rifle. The kit features a mil-spec buffer tube machined from 7075-T6 aluminum and slots for a six-position buttstock, along with a buffer spring, end plate, and castle-lock nut. For hunters and shooters who want a straightforward, purpose-driven component set for an AR-style carbine, this kit keeps the focus on function and compatibility.

Why Hunters Choose the Aero Precision

Complete Ar-15

Carbine buffer kit for a

Includes Mil-spec

Buffer tube machined from 7075-T6

Six-position Buttstock

Slots provide adjustable stock positioning

Kit Includes

Buffer spring, end plate, and

Designed Address

Overgassing in short gas system

Key Features

  • Complete AR-15 carbine buffer kit for a full buffer system setup
  • Includes a mil-spec buffer tube machined from 7075-T6 aluminum
  • Buffer tube features slots for a six-position buttstock
  • Kit also includes a buffer spring, end plate, and castle-lock nut
  • Designed for AR-style firearms with short gas systems
  • Offered by Aero Precision

Best Used For

  • AR-15 carbine owners building a complete mil-spec buffer setup from scratch
  • Shooters addressing overgassing in short, pistol-length AR-style firearms
  • Users wanting a six-position buttstock-compatible buffer tube kit
  • Builders needing included spring, end plate, and castle-lock nut components
  • Aero Precision fans seeking a straightforward carbine buffer kit

Specifications

Buffer SpringIncluded
Buffer TubeIncluded
Buffer Tube Material7075-T6 aluminum
Castle Lock NutIncluded
End PlateIncluded
Mil SpecYes
Overgassing NoteAddressed in description
Six Position Buttstock SlotsYes

Pros

  • Complete AR-15 carbine buffer kit for a full buffer system setup
  • Includes mil-spec buffer tube machined from 7075-T6 aluminum
  • Six-position buttstock slots provide adjustable stock positioning
  • Kit includes buffer spring, end plate, and castle-lock nut
  • Designed to address overgassing in short gas system AR-style firearms

Considerations & Trade-offs

  • Designed around a mil-spec carbine setup with a six-position buttstock interface, so it is not intended for every AR configuration.
  • The kit is aimed at addressing overgassing in short gas-system builds, which means its value is most relevant to those specific rifles.
  • The description does not specify the included buffer weight or other tuning details, so compatibility and setup should be verified against the rest of the build.
  • This is a component kit rather than a complete stock assembly, so additional parts are still required to finish the setup.

Suggested Comparisons

  • AR-15 buffer kits
  • AR-15 lower parts kits
  • AR-15 buttstocks
  • AR-15 recoil management components

Suggested Accessories

  • AR-15 buttstock
  • Buffer spring
  • Castle nut tool
  • End plate

Frequently Asked Questions

What comes in the AR-15 Carbine Buffer Kit?

The kit includes a mil-spec buffer tube, a buffer spring, an end plate, and a castle-lock nut.

Is this buffer kit compatible with a six-position buttstock?

Yes. The buffer tube is described as having slots for a six-position buttstock.

What material is the buffer tube made from?

The buffer tube is machined from 7075-T6 aluminum.

Why would a hunter or shooter consider a carbine buffer kit like this?

The product description says it is intended to help address overgassing in short, pistol-length AR-style firearms, which can increase wear on internal components and increase felt recoil.

Are the differences between the available kit options specified here?

No. The description says several options are available in the lineup, but it does not specify how the kits differ.