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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


(507) 218-6884

Nathan Humphrey


(507) 218-6884

Where are we?

We have moved! We are now located at:

115 South Main Street

Stewartville, MN 55976

New Store hours are:

Monday: Closed

Tuesday: 10am - 6pm

Wednesday: 10am - 6pm

Thursday: 10am - 8pm

Friday: 10am - 6pm

Saturday: 10am - 6pm

Sunday: Closed

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