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Hammer/Sear Block Pins - 10/22A(R) Hammer Pin For Brownells Hammer/Sear Pin Block

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

Sized Use

The Brownells Hammer/Sear Block

Allows Visual

Inspection of hammer and sear

Lets Hammer

Sear be mated outside the

Allen Screw

Locks pin setting in place

Pins Are

Individually numbered for identification

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SKU: 080000104

Overview

Designed for careful trigger work and parts fitting, this pin is made to be used with the Brownells Hammer/Sear Block so hammer and sear components can be checked outside the firearm. It supports visual inspection of the engagement point, giving a clear view when evaluating new parts or making fine adjustments to factory parts. The pin includes an Allen screw to lock the setting in place, helping preserve the component’s position during setup. Individually numbered for identification, it is intended for use with specific handgun and rifle applications.

Why Hunters Choose the Brownells

Allows Visual

Inspection of hammer and sear

Sized Various

Handguns and rifles

Allen Screw

Locks the pin setting in

Individually Numbered

For proper identification

Useful Cutting

Engagement surfaces on new parts

Key Features

  • Sized for use with the Brownells Hammer/Sear Block
  • Allows visual inspection of hammer and sear engagement
  • Lets hammer and sear be mated outside the firearm
  • Allen screw locks pin setting in place
  • Pins are individually numbered for identification
  • Useful for cutting new engagement surfaces or fine-tuning factory parts

Best Used For

  • Gunsmiths checking hammer and sear engagement outside the firearm for clear visual inspection
  • Owners fine-tuning factory trigger components with a Brownells Hammer/Sear Block setup
  • Builders fitting new parts and needing controlled, repeatable engagement setup
  • Users working on compatible handguns or rifles that require individually numbered pin identification

Pros

  • Allows visual inspection of hammer and sear engagement outside the firearm
  • Sized for various handguns and rifles
  • Allen screw locks the pin setting in place
  • Individually numbered for proper identification
  • Useful for cutting engagement surfaces on new parts
  • Helpful for fine-tuning factory parts

Considerations & Trade-offs

  • Requires the Brownells Hammer/Sear Block to be useful, so it is not a standalone fitting tool.
  • Sized for specific handguns and rifles, so the 10/22A(R) hammer pin is only appropriate where that pin designation matches the firearm.
  • Designed for visual inspection and setup of hammer and sear engagement; it does not replace final fitting or verification in the firearm.
  • Best suited to gunsmithing and parts fitting work, so it is more specialized than a general-purpose bench accessory.

Suggested Comparisons

  • Trigger and sear fitting tools
  • Gunsmithing blocks and fixtures
  • Firearm maintenance and repair tools
  • Handgun and rifle parts fitting accessories

Suggested Accessories

  • Bench block
  • Punch set
  • Gun vise
  • Trigger pull gauge

Frequently Asked Questions

What is this 10/22A(R) hammer pin used for?

It is a numbered pin for use with the Brownells Hammer/Sear Block, allowing the hammer and sear to be positioned outside the firearm for visual inspection of their engagement.

Does this pin work by itself, or does it require another tool?

It is designed for use with the Brownells Hammer/Sear Block. The source data does not indicate that it is intended to be used on its own.

Why would a hunter or gunsmith use this pin during trigger work?

The product description says it helps provide a clear, unobstructed view of the critical point of engagement, which can be useful when cutting engagement surfaces on new parts or fine-tuning factory parts.

Are these pins universal for all firearms?

No. The description says the pins are sized for various handguns and rifles, and this listing is specifically the 10/22A(R) hammer pin. The source data does not provide a complete compatibility list.

How is the pin held in position?

The description states that an Allen screw locks the pin setting so the hammer and sear can be dropped in place relative to their actual position in the firearm.