I agree with Doug, I worked the shows with him when he and Powers had Great Southern Arms. The markup on accessories is better than that on firearms; I guess you would have to decide if you want to pay the promoters for tables every weekend, + gas and time for travel to the shows, pay for hotels + food, and would you make enough to pay for all those expenses. On the other hand you might do quite well with a modest internet-based business, if you can link to sites and / or get your web address out. I went on the 'net 4 years ago with my translation business and while it has ups and downs, I have done more translation business since then as a result of being on the web, than in ALL of the 20 years prior. That is the way to go as a business model, especially for part-time entrepeneurs.
My 2cents...
My 2cents...