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Brownells

Brownell's Centerfire/Rimfire Firing Pin Protrusion Gauge - Centerfire/Rimfire Firing Pin Protrusion Gauge Steel

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

Measures Firing

Pin protrusion on both centerfire

Precise Measurement

Support for gunsmithing and firearm

Useful Diagnosing

Ignition issues and verifying firing

Helps Confirm

Firing pin specifications during repairs

Includes Hardened

Plunger and compact 1/2-inch diameter,

$39.99
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SKU: 080782000

Overview

Designed for gunsmiths and serious firearm owners, this gauge is used to measure firing pin protrusion on both centerfire and rimfire bolts. It supports inspection work when diagnosing ignition issues, checking for firing pin wear, or confirming that a firearm meets manufacturer specifications during repair or modification. The tool is built around a hardened plunger and compact dimensions, making it a straightforward bench accessory for detailed maintenance and setup work.

Why Hunters Choose the Brownells

Measures Firing

Pin protrusion on both centerfire

Precise Measurement

Support for gunsmithing and firearm

Useful Diagnosing

Ignition issues and verifying firing

Helps Confirm

Firing pin specifications during repairs

Compact Gauge

A hardened plunger for measurement

Key Features

  • Measures firing pin protrusion on both centerfire and rimfire bolt firearms.
  • Provides precise measurement support for gunsmithing and firearm maintenance.
  • Useful for diagnosing ignition issues and verifying firing pin wear.
  • Helps confirm firing pin specifications during repairs or modifications.
  • Includes a hardened plunger and compact 1/2-inch diameter, .90-inch length design.

Best Used For

  • Gunsmiths checking firing pin protrusion during repairs or diagnostic work
  • Firearm owners troubleshooting ignition issues in centerfire or rimfire bolts
  • Users verifying firing pin wear against manufacturer specifications
  • Bench work where precise measurement is needed before returning a firearm to service

Specifications

CompatibilityCenterfire and rimfire firearms
Diameter1/2 in (12.7 mm)
Length0.90 in (23 mm)
MaterialSteel
PlungerHardened plunger

Pros

  • Measures firing pin protrusion on both centerfire and rimfire bolts.
  • Provides precise measurement support for gunsmithing and firearm maintenance.
  • Useful for diagnosing ignition issues and verifying firing pin wear.
  • Helps confirm firing pin specifications during repairs or modifications.
  • Compact gauge with a hardened plunger for measurement use.

Considerations & Trade-offs

  • Designed for measuring firing pin protrusion rather than general-purpose firearm work, so its use is fairly specific to diagnosis and verification tasks.
  • Intended for both centerfire and rimfire applications, but the correct reading still depends on matching the tool to the firearm’s bolt and specification requirements.
  • The compact 1/2" diameter and .90" length make it a specialized shop gauge, which may be less convenient if you need a broader all-in-one inspection tool.
  • Its value is tied to precision measurement; it does not by itself correct firing pin protrusion issues or replace repair work when a firearm is out of spec.

Suggested Comparisons

  • Firearm inspection gauges
  • Gunsmithing tools
  • Ignition diagnostic tools
  • Rimfire maintenance tools

Suggested Accessories

  • Gunsmithing tools
  • Firing pin maintenance tools
  • Bolt-action inspection tools
  • Firearm repair accessories

Frequently Asked Questions

What is this gauge used for?

It is used to measure firing pin protrusion in both centerfire and rimfire firearms.

Can it be used on both centerfire and rimfire bolts?

Yes. The product is described as compatible with both centerfire and rimfire firearms.

What problems can this tool help diagnose?

The description says it can help diagnose ignition issues and verify firing pin wear.

Is this intended for gunsmithing work or general firearm maintenance?

The product is described as useful for gunsmiths and firearm enthusiasts who need precision when checking firing pin protrusion.

What size or construction details are provided?

The listed specs say it is 1/2 in. (12.7 mm) in diameter, .90 in. (23 mm) long, with a hardened plunger.