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Brownells

Ar-15/M16 Carrier Key Staking Tool - Carrier Key Staking Tool

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

Precision-machined Solid

Steel tool for staking AR-15/M16

Holds Carrier

Securely and positions the key

Four Hex

Screws tighten the tool to

Additional Top

Retaining screw helps prevent carrier

Flat-machined Screw

Tip is designed to apply

$89.99
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SKU: 080000638

Overview

Built for armorer-level work on AR-15/M16 carrier keys, this tool is designed to hold the carrier securely while the key screws are staked from the sides. Its setup helps position the key for consistent dimpling and reduces the risk of slipping with a hammer and punch. A flat-tipped retaining screw is included to help keep the carrier in place without marring it, while hardened screw tips add durability to the tool itself. This is a purpose-specific bench tool for users who want a controlled staking process rather than a more improvised approach.

Why Hunters Choose the Brownells

Precision-machined Solid

Steel construction supports controlled carrier

Holds Carrier

Securely during setup and dimple

Side-access Staking

Approach avoids hammer-and-punch slipping concerns

Flat-tipped Retaining

Screw is designed to apply

Hardened Screw

Tips and four hex screws

Key Features

  • Precision-machined solid steel tool for staking AR-15/M16 carrier key screws from the sides
  • Holds the carrier securely and positions the key for correct dimple locations
  • Four hex screws tighten the tool to dimple the carrier key screws
  • Additional top retaining screw helps prevent carrier movement during use
  • Flat-machined screw tip is designed to apply even retaining force without marring the carrier
  • Made from 1018 carbon steel with a black oxide finish

Best Used For

  • Armorer work on AR-15/M16 carrier keys when precise side staking is needed
  • Users who want to secure carrier key screws without hammer-and-punch risk
  • Bench setup for maintaining carriers during repeated assembly and disassembly
  • Shop or range-side maintenance for shooters focused on reliable screw retention

Specifications

Blade FinishBlack oxide finish
Height2" high
Material1018 carbon steel
Overall Length3" (7.62cm) long
Width2" (5.1cm) wide

Pros

  • Precision-machined solid steel construction supports controlled carrier key staking
  • Holds the carrier securely during setup and dimple placement
  • Side-access staking approach avoids hammer-and-punch slipping concerns
  • Flat-tipped retaining screw is designed to apply even force without marring the carrier
  • Hardened screw tips and four hex screws provide secure tool adjustment

Considerations & Trade-offs

  • Designed for AR-15/M16 carrier key staking only, so it’s a specialized bench tool rather than a general-purpose armorer’s fixture.
  • Requires use of the tool’s hex screws and retaining screw to position the carrier correctly, which adds setup steps compared with a simple punch-and-hammer method.
  • Made from 1018 carbon steel with a black oxide finish, so it is a shop tool intended for controlled use and storage rather than a lightweight field accessory.
  • Its compact 3" x 2" x 2" size is convenient on the bench, but it also means the carrier must fit within the tool’s fixed holding format.

Suggested Comparisons

  • AR-15/M16 maintenance tools
  • Gun vise and holding fixtures
  • Armorer's tools
  • Firearm assembly and staking tools

Suggested Accessories

  • AR-15/M16 carrier key staking tool
  • Gun cleaning and maintenance kit
  • Hex key set
  • Bench vise

Frequently Asked Questions

What is this tool used for on an AR-15/M16 carrier key?

It is used to stake the carrier key screws from the sides, positioning the key so the screws can be dimpled in the correct locations.

Does this tool help avoid damage during staking?

Yes. The description says it eliminates the hassle of using a hammer and punch that could slip and damage the key, screws, or carrier.

How does the tool hold the carrier in place?

It holds the carrier securely with four hex screws, and an additional retaining screw on top prevents the carrier from moving.

What materials and finish are listed for this tool?

The listed specifications are 1018 carbon steel with a black oxide finish.

What are the dimensions of the tool?

The listed dimensions are 3 inches long, 2 inches wide, and 2 inches high.