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Brownells

Hammer/Sear Block Kits - Colt 1911 Hammer/Sear Pin Block Kit

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

Machined Steel

Block for mating hammer and

Clear View

Of the critical point of

Accepts Wide

Selection of hammer and sear

Dovetailed Adjustment

Block rides in a slotted

Allen Screw

Locks the pin setting in

$56.28
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SKU: 080001226

Overview

This machined steel block is designed to let you set up hammer and sear components outside the firearm for a clear view of their engagement point. It is suited to gunsmithing work on new parts or for refining factory parts, especially when precise pin spacing and alignment matter. The dovetailed adjustment block and locking screw help hold the pin setting once it is matched to the frame or receiver, while the numbered pins aid identification. For builders and tuners working on compatible handguns and rifles, it provides a controlled way to evaluate and adjust critical contact surfaces.

Why Hunters Choose the Brownells

Machined Steel

Block provides a clear view

Accepts Wide

Selection of hammer and sear

Dovetailed Adjustment

Block allows precise pin spacing

Allen Screw

Locks pin settings to hold

Useful Cutting

Engagement surfaces on new parts

Key Features

  • Machined steel block for mating hammer and sear outside the firearm.
  • Provides a clear view of the critical point of engagement.
  • Accepts a wide selection of hammer and sear pins.
  • Dovetailed adjustment block rides in a slotted channel for precise pin spacing.
  • Allen screw locks the pin setting in place.
  • Pins are individually numbered for proper identification.

Best Used For

  • For gunsmiths fitting hammer and sear parts outside the firearm for clear engagement inspection.
  • For builders fine-tuning new parts before final installation in compatible handguns or rifles.
  • For experienced hobbyists adjusting pin spacing to match individual frames and receivers.
  • For users organizing multiple pin sizes with numbered identification during precision work.

Specifications

Accepts PinsA wide selection of hammer and sear pins sized for various handguns and rifles
Adjustment BlockDovetailed adjustment block
ApplicationCutting the engagement surfaces on new parts or fine-tuning factory ones
CompatibilityColt 1911
Locking MechanismAllen screw
MaterialMachined steel
PackagingPackaged
Pin IdentificationPins are individually numbered
Pin Spacing AdjustmentPrecisely set to match individual frames and receivers
UseMating hammer and sear (or trigger) outside of the firearm for a clear, unobstructed view of the critical point of engagement

Pros

  • Machined steel block provides a clear view of hammer and sear engagement outside the firearm.
  • Accepts a wide selection of hammer and sear pins for various handguns and rifles.
  • Dovetailed adjustment block allows precise pin spacing for individual frames and receivers.
  • Allen screw locks pin settings to hold the selected spacing in place.
  • Useful for cutting engagement surfaces on new parts or fine-tuning factory parts.
  • Pins are individually numbered for straightforward identification.

Considerations & Trade-offs

  • Designed for hammer and sear setup outside the firearm, so it is a bench tool rather than a field-use item.
  • Pin spacing must be set to match the specific frame or receiver, so it requires careful adjustment before use.
  • The kit accepts a wide selection of hammer and sear pins, but users still need to confirm the correct pin sizes for the parts being fitted.
  • Best suited to cutting engagement surfaces on new parts or fine-tuning factory ones; it is not a general-purpose gunsmithing tool for every task.

Suggested Comparisons

  • Gun smithing and trigger work tools
  • Firearm maintenance and fitting tools
  • Hammer and sear pin sets
  • Bench tools for handgun and rifle parts fitting

Suggested Accessories

  • Honing stone
  • Gunsmithing vise
  • Pin punch set
  • Bench block

Frequently Asked Questions

What is this Hammer/Sear Pin Block Kit used for?

It is used to mate the hammer and sear, or trigger, outside the firearm so you can see the point of engagement more clearly. The source also says it is useful for cutting engagement surfaces on new parts or fine-tuning factory parts.

What firearms will it work with?

The description says it accepts a wide selection of hammer and sear pins sized for various handguns and rifles. It does not list specific models beyond the Colt 1911 product title.

How is the pin spacing adjusted?

The block rides in a slotted channel and uses a dovetailed adjustment block so pin spacing can be set to match individual frames and receivers. An Allen screw locks the setting in place.

Are the pins identified in any way?

Yes. The description says the pins are individually numbered for proper identification.

What is the kit made of?

The source identifies the block as machined steel. No other material details are provided.