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Brownells

Ar-15 Pivot Pin Detent Installation Tool - Pivot Pin Installation Tool

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

Makes Installation

Of the M16 pivot pin

Helps Prevent

Loss of detents during installation

Guides Detent

Spring into place

Serves As

Slave pin when installing the

Blued Steel

Construction

$13.99
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SKU: 080216011

Overview

This installation tool is designed to simplify fitting the M16 pivot pin and its detent during AR-15 assembly. It helps guide the detent and spring into position, while also serving as a slave pin to make the pivot pin installation process more controlled. By reducing the chance of losing small parts, it is well suited for builders and armorers working on lower receivers. Brownells lists it with blued steel construction and compact dimensions for bench use.

Why Hunters Choose the Brownells

Makes M16

Pivot pin and detent installation

Helps Prevent

Loss of detents during installation

Guides Detent

Spring into position

Serves As

Slave pin for pivot pin

Blued Steel

Compact 1/4-inch diameter

Key Features

  • Makes installation of the M16 pivot pin and detent faster and easier.
  • Helps prevent loss of detents during installation.
  • Guides the detent and spring into place.
  • Serves as a slave pin when installing the pivot pin.
  • Blued steel construction.
  • 1/4 inch diameter with 2 1/2 inch and 1 1/2 inch legs.

Best Used For

  • Armorer or gunsmith installing M16 pivot pins and detents on AR-15 pattern rifles
  • Bench work where keeping small detents and springs controlled matters
  • Users wanting a simple tool to guide the detent and spring into place
  • Anyone needing a slave pin for pivot pin installation during routine assembly

Specifications

CompatibilityM16 pivot pin and detent
Diameter1/4 in (6.3 mm)
FunctionGuides detent and spring into place; serves as a slave pin when installing the pivot pin
Leg Lengths2 1/2 in (6.3 cm) and 1 1/2 in (3.8 cm)
MaterialBlued steel

Pros

  • Makes M16 pivot pin and detent installation faster and easier.
  • Helps prevent loss of detents during installation.
  • Guides the detent and spring into position.
  • Serves as a slave pin for pivot pin installation.
  • Blued steel construction with compact 1/4-inch diameter.

Considerations & Trade-offs

  • Designed for M16 pivot pin and detent installation, so its use is specialized rather than general-purpose.
  • The tool is sized at 1/4 inch diameter with two different leg lengths, which may require a bit of familiarity to use smoothly.
  • Blued steel construction is specified, but no additional material or finish details are provided beyond that.
  • It helps guide the detent and spring into place, but it is still an installation aid rather than a substitute for careful assembly work.

Suggested Comparisons

  • AR-15 armorer tools
  • Pivot pin installation tools
  • Firearm maintenance tools
  • Lower receiver assembly tools

Suggested Accessories

  • AR-15 armorer's tool kit
  • Pivot pin detent
  • Small parts tray
  • Bench vise

Frequently Asked Questions

What is this tool used for?

It is designed to make installation of the M16 pivot pin and its detent faster and easier.

Does it help keep the detent from getting lost during installation?

Yes. The product description says it prevents loss of detents.

How does it help during pivot pin installation?

It guides the detent and spring into place and also serves as a slave pin when installing the pivot pin.

What material is the tool made from?

The listed specification is blued steel.

What size are the tool’s dimensions?

The specs list a 1/4 inch (6.3 mm) diameter and legs measuring 2 1/2 inches (6.3 cm) and 1 1/2 inches (3.8 cm) long.