Product Spotlight: Brownells BRN4 HK416 Bench Block

Published on March 28, 2025
Duration: 2:42

This video demonstrates the use of the Brownells BRN4/HK416 Bench Block, a specialized tool designed for AR builders. It facilitates the installation and removal of gas block pins on BRN4 and HK416 pattern rifles, including those with M277/M38 profile barrels. The non-marring polymer construction and integrated punch holders make it a valuable tool for preventing damage during the build process.

Quick Summary

The Brownells BRN4/HK416 Bench Block is a specialized tool for AR builders to install and remove gas block pins on BRN4 and HK416 rifles. Made from non-marring polymer, it accommodates various barrel profiles, including those with bayonet lugs, and prevents damage during gunsmithing.

Chapters

  1. 00:08Introduction: Brownells BRN4/HK416 Bench Block
  2. 00:17Product Overview and Purpose
  3. 00:39Function: Gas Block Pin Installation
  4. 00:51Bench Block Features: Textured Underside
  5. 01:00Barrel Placement and Piston Removal
  6. 01:10Using the Block for Pin Work
  7. 01:23Compatibility: M277/M38 Barrels and Bayonet Lugs
  8. 01:34HK416 Specific Features Compatibility
  9. 01:45Advantages Over Standard Vise
  10. 01:53Material: Non-Marring Polymer
  11. 01:59Integrated Punch Holders
  12. 02:09Importance of Protecting Finish
  13. 02:20Conclusion and Call to Action

Frequently Asked Questions

What is the Brownells BRN4/HK416 Bench Block used for?

The Brownells BRN4/HK416 Bench Block is a specialized tool designed for AR builders to facilitate the installation and removal of gas block pins on BRN4 and HK416 pattern rifles. It provides a stable, non-marring platform for this precise gunsmithing task.

What types of barrels is the BRN4/HK416 Bench Block compatible with?

This bench block is compatible with standard BRN4 and HK416 barrels, including M277/M38 profile barrels that feature a bayonet lug. It also accommodates barrels with integrated front sights or adjustment knobs on the gas block.

Why is a non-marring polymer important for a gunsmithing tool?

Using a non-marring polymer tool, like the BRN4/HK416 Bench Block, is crucial for protecting the finish of valuable firearms during assembly or disassembly. It prevents scratches and cosmetic damage that could occur with metal tools or improper techniques.

What are the advantages of using the BRN4/HK416 Bench Block over a standard vise?

The bench block offers superior alignment and stability for gas block pin work, preventing the barrel from shifting or being damaged by vise jaws. Its design specifically cradles the barrel, ensuring precise work and protecting the firearm's finish.

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