Usually I would recommend staying away from consignment until you are much bigger because your cash flow cannot handle being the banker for other companies.
As for what stores look for, a product that sells itself--very simple if you can get the ammo to sell--they will be impressed, so plan some sort of event in their area if they purchase a minimum order quantity. That way they order a good amount from you, you get to run an event to promote your products, they get to have new customers and their old customer invited to a good time.
All the Best,
Brad Sugars is the founder and chairman of ActionCOACH. As an entrepreneur, author and business coach, he has owned and operated more than two dozen companies including his main company, ActionCOACH, which has more than 1,000 offices in 34 countries.