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BROWNELL'S CENTERFIRE/RIMFIRE FIRING PIN PROTRUSION GAUGE Reviews & Ratings

BROWNELL’S CENTERFIRE/RIMFIRE FIRING PIN PROTRUSION GAUGE

The Brownells Centerfire/Rimfire Firing Pin Protrusion Gauge provides gunsmiths and firearm enthusiasts with the precision needed to measure firing pin protrusion in centerfire and rimfire firearms. By ensuring that firing pins meet exact specifications, this tool helps prevent misfires, maintains reliable ignition, and ensures the safe operation of firearms. It is ideal for diagnosing ignition issues, verifying firing pin wear, and ensuring compliance with manufacturer standards during firearm repairs or modifications.

Key Features:

Dual Compatibility: Designed for use with both centerfire and rimfire firearms, making it versatile for a variety of firearm platforms.

Elliptical Plunger Design: Delivers highly accurate measurements to within 0.0001 inches, essential for fine-tuning firing pins and ensuring safety.

Efficient Operation: Features a simple mechanism that locks in measurements quickly, allowing for consistent and reliable readings.

Specifications:

Dimensions: 0.5 inches (12.7 mm) diameter; 0.9 inches (23 mm) length

Material: Hardened steel plunger for lasting durability and precision

Customer Insights:

Customers praise the Brownells Centerfire/Rimfire Firing Pin Protrusion Gauge for its accuracy and durability. Many have highlighted its ability to simplify the process of checking firing pin protrusion across different firearm types, ensuring proper performance and reliability. The robust design and clear operation make it a trusted tool for regular maintenance and troubleshooting firing issues.

The Brownells Centerfire/Rimfire Firing Pin Protrusion Gauge is an invaluable tool for gunsmiths and hobbyists who need to ensure firing pins meet critical safety and performance standards across a wide range of firearms.

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2 Stars

1 Stars

Reviews Summary

Reviewers praise the BROWNELL'S FIRING PIN GAUGE for its quality, ease of use, and versatility in measuring firing pin protrusion on both centerfire and rimfire rifles. Some users encountered initial manufacturing issues but reported positive results after minor adjustments. Overall, it is deemed a trusty addition to any gunsmith's toolkit.

What Reviewers Are Saying

Product Quality

70%

Many reviewers highlight the solid construction and durability of the gauge, with several noting that it functions precisely as intended. The well-made design has led to an expectation of longevity, suggesting customers feel it represents a worthwhile investment.

Ease of Use

60%

A significant number of users commend the gauge for its user-friendly design. Reviewers mention that, once familiar with its operation, they can quickly and accurately measure pin protrusion, signaling its effectiveness for both novice and experienced gunsmiths.

Versatility

50%

Reviewers appreciate the gauge's ability to measure protrusion on various firearms, including rimfire rifles. This versatility adds value, as it allows users to utilize one tool for multiple applications in their gunsmithing practices.

Initial Quality Control Issues

30%

A couple of reviewers reported issues related to initial machining, such as the thumbscrew not functioning correctly due to debris in the screw hole. However, they noted that with minor adjustments, the tool performed well, indicating that some inconsistency may affect first impressions but can be resolved.

Instruction Clarity

40%

Customers found the included instructions helpful, which significantly eased the introduction to using the gauge. This element likely contributed to the overall positive experience, as it helps new users get started without extensive trial and error.

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AR firing pin protrusion gauge

Had to certify multiple ar bolts for return to service. This gauge really speeded up the process! Well made and highly recommended!!

by DAVID LEVECK on May 29, 2026

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FIRING PIN PROTRUSION GAUGE

so much better than the go-no go gauges. Dont even consider the mil style gauges.

Would you recommend this? Yes, I would recommend to a friend

by John Kovach on February 10, 2025

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Was this review helpful? 1

Very nice tool

It’s a great little tool have in your gunsmith tools. Do need to also have calipers to go along with it. Well made, does exactly as it’s suppose to do and even comes with helpful instructions. It’s a tool that you’ll have for ever.

Would you recommend this? Yes, I would recommend to a friend

by ROBERT PHILLIPS on January 26, 2025

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Protrusion Gauge

I had been meaning to buy this gauge for a while, and when I saw it on sale I couldn't wait any longer. I didn't realize that the gauge can also be used to measure pin protrusion on rimfire rifles, so that's just another plus for buying this gauge.

Would you recommend this? Yes, I would recommend to a friend

by Gary Taylor on July 08, 2024

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Was this review helpful? 3

Great tool

I have wanted one of these for a while and intended to make one but didn't get to it. Great tool for measuring firing pin protrusion.

Its a super tool

Took me a few try's till I got the hang of it and now NO problems. Only one ( 1) item to adjust and close to measure THE SCREW and then just measure the distance / gap . If I can do it , you can do it- just take the first step.

Simply a must have to fit firing pins

Well made, easy to use and accurate. I would hate to be with out it. A must for fitting firing pins. I've had mine for years. I doubt it will ever wear out, but if I lose it, I'll buy another one ASAP

This is a great tool to use

This tool makes it easy to measure the firing protrusion. Its a great help to use. I its used in my shop all of the time!

Not so good for smaller calibers

Bought this to to test a Ruger American Ranch Gen II in 5.56 that was having misfires with Hornady match ammo. Gauge is easy to use, but the Ruger's bolt face is so tight that the extractor has to be forced out to get the gauge inserted flush. Took multiple attempts to get an accurate reading. Larger calibers shouldn't be a problem.

Would you recommend this? Yes, I would recommend to a friend

by SHAWN WELLS on April 13, 2026

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Roughly machined

Someone didn't finish machining my tool - Even with the thumbscrew removed, the pin wouldn't budge without significant force. After I removed the pin I determined that after threading the hole for the thumbscrew someone didn't remove the waste from inside the hole. After I cleaned it out, and trimmed about 1/4" off the incredibly long thumbscrew, it now works great. It didn't take a lot of work to make it perfect though you expect perfect at this price.

by JC on August 08, 2024

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Was this review helpful? 1