About Us

GMK Armoury Specialties Interior

GMK Armoury Specialties Interior

GMK Armoury Specialties is located in Thunder Bay at the corner of Court and John Street in the Arnone Trucking complex. The shop is owned and operated by Gerry Kosoris who has been gunsmithing in Northwestern Ontario for over 30 plus years. The inventory maintained is large and ever-changing. A complete line of ammunition for every type of gun we sell, plus reloading supplies and other shooting accessories are carried in stock. If you can’t find what you are looking for, we will try to order it in for you. Dog spray and bear-bangers are part of our routine inventory. We do consignment sales of firearms and shooting accessories. Items are appraised and an agreed selling price will be reached;  GMK will charge a 20% commission on the selling price.  Note: travel fee may also apply if GMK is required to pick up items.




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GMK Armoury Specialties Exterior

GMK Armoury Specialties Exterior

Store and Range Hours

Monday 10:30am-5:30pm (range closed)

Tuesday 10:00am-9:00pm

Wednesday 10:00am-9:00pm

Thursday 10:00am-9:00pm

Friday 10:00am-9:00pm

Saturday 10:00am-5:00pm



GMK T-shirts back in stock available in men’s and women’s sizes. All shirts have the GMK logo on the front.
NAVY BLUE-$20.00 plus tax
GREY AND PINK CAMO-$25.00 plus tax