Considering the business problems that the OP's mentioned, the truth may be that Charlie can't buy from Ruger any longer. The owner may not even realize that, depending on how much she actually knows about the business. Sometimes when small businesses are taken over by family, or others, who aren't familiar w/ their operations, they can be held hostage by the existing employees. That might explain why Charlie bolted the shop and drove away when the OP arrived that one time - that seems a little suspicious to me.
RTFM if you've got a relationship w/ the owners, and care enough to make the effort, you might call her and explain what's happened. She may have gotten an entirely different story from Charlie.
RTFM if you've got a relationship w/ the owners, and care enough to make the effort, you might call her and explain what's happened. She may have gotten an entirely different story from Charlie.