The team that makes the magic happen.

Meet the Black Diamond Armory Team

We are located in Stewartville, Minnesota.  Jerry and Nathan have combined their skills and transformed their passion of firearms from an extensive hobby into a business that will serve Southern Minnesota with great products, fair prices and an excellent customer experience.


Black Diamond Armory will be evolving through phases of product and service developments.  Phase one will help hard working Americans customize their existing firearms, purchase new or used firearms and offer firearm safety / Permit to Carry classes all the while saving money and creating a fun atmosphere to exercise our 2nd Amendment right.  We are excited to bring future phases to our clients and are working diligently to ensure they are done right.


Jerry Fossum

Owner / Sales

Nathan Humphrey

Owner / Gunsmith (FNG)

Where are we?

311 4th Street NE

Stewartville, MN 55976

(507) 218-6884

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