Im not sure if Indiana has any producers of firearms, but place like Glock, Springfield ETC....
Do they have product reps or sales people ect?
How does one get into that industry?
No gunmakers in this state AFAIK, but there are a number of firearm-related companies, including reloading outfits (Sinclair International), gear/accessory manufacturers (Chaos USA, Gear Sector, etc), distributors (Riley's), and importers (Russian American Armory, Kiesler's/Orion). Additionally, many of the big manufacturers have sales reps all over the country that handle certain geographical regions.