Engis Corp.
Engis has a complete range of products for grinding and polishing of ammunition tooling and gun components that achieve precision tolerances, attain extreme surface finishes, fast-cutting diamond compound produces flawless mirror finishes on premium grades of tungsten carbide dies, and one-stop shopping for grinding pins, polishing tools, consumables, and accessories.
Engis has worked closely with manufacturers of handguns, as well as sporting and military rifles, to improve product consistency and lower costs in the production and finishing of pistol barrels, revolver barrels, rifle barrels, gas blocks and triggers.
Engis Bore Finishing Systems have been successfully used in the precision honing of the barrel prior to rifling. Not only does our Single-Pass technology improve the roundness and straightness of the barrel, but it also clearly enhances the cosmetics which are so important to the quality conscious firearms enthusiast. In some cases, we have also improved the accuracy of bores in precision trigger assemblies.
Engis Single-Pass bore finishing technology delivers superior-fitting bores when compared to bores finished through conventional honing.
Conventional honing uses a reciprocating tool with relatively fast-wearing bonded stones that must expand and contract during each cycle. Single-Pass technology is just that; the work is spread over a series of progressively finer, pre-set diamond tools that only require a ‘single pass’ from each tool. It is this pre-set capability of the tooling, combined with the extremely slow wear of the diamond coating, that allows the Single- Pass process to achieve superior bore size capability.
Single-pass process for firearms bore finishing:
• Improved bore quality
• Tool cuts on full periphery
• Improved Statistical Process Control
• <2 microns of distortion on 20 inch barrels
• Long tool life results in lower overall cost per piece
• High production rates
Engis offers a standard machine platform for firearm component finishing applications which can be customized to meet your unique production and part quality requirements. This approach helps keep the initial capital investment low and within budget. Additionally, Engis has the capability to design automation and/or robotic parts handling systems, brushing stations and in-line post- and pre-gauging systems which can further reduce labor and inspection costs.
Engis also manufactures custom machines through its Specialty Series offering. Features such as multi-columns, extended stroke lengths, specialty gauging packages, auxiliary operations and independent spindles are possible.