About Us

Dave Manson Precision Reamers is a company dedicated to providing the finest cutting tools and gauges to the firearms industry.  Our job isn’t complete until you have the tools you need to do your job.  Whether you’re a large manufacturer, one-man shop, or hobbyist, you’ll find our dedication to providing you with the proper tooling is unsurpassed.

People are the heart of any company and Dave Manson Precision Reamers is no exception. We’re all participants in the shooting sports and understand the need–backed by our skill and experience–to get it right so your project turns out the way you want.

The tooling we manufacture is quite varied.  We stock a large selection of standard chambering reamers and headspace gauges for all types of firearms and offer virtually any caliber and/or wildcat on special order.

We also make a wide selection of tooling for other gunsmithing tasks. From action truing to muzzle re-crowning, from installation of screw-in chokes to extending forcing cones and gauging barrel wall thickness, it’s likely we have a product that will help in your work.

When you find a product of interest when reviewing our website, you’ll likely find a FAQ related to it or instructions describing its use. We’ve also included a printable version of our most recent catalog.

Please contact us if you have questions about how an existing product is used, beyond what’s available here. We appreciate the support of all our customers and continue to work to earn your business. 


Dave Manson, President

ou have suggestions for new tooling, or if you simply have questions about how an existing product is used.  We appreciate the support of all our customers and will work to earn your continuing support in the future.