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Precision Solutions for Barrel Components Manufacturers


Engis Bore Finishing Systems have been successfully used in the precision honing of the barrel before rifling. Our Single-Pass Bore Finishing Technology improves the roundness and straightness of the barrel, enhancing the cosmetics which are crucial to the quality-conscious firearms enthusiast. In some cases, we have also improved the accuracy of bores in precision trigger assemblies.

Our electroplated Bore Finishing Tools can be used on either soft or hardened metal barrels up to 20” in length.

Benefits of Single-Pass technology include:

  • Improved straightness in the barrel
  • Better barrel roundness
  • A more uniform finish
  • Increased tool life vs reamers
  • Lower costs

Honing Solutions for Firearm Components

In our DiaMold™ division, you will find a complete range of diamond compounds and rotary polishing products for the finishing of Ammunition Tooling and Gun Components.


Firearm Components Brochure


Superabrasive Powders

Lapping & Polishing

Superabrasive Tools

Bore Honing Systems

Mold & Die Polishing