The divorce of international gun mogul Gaston Glock Sr. has spilled into federal court in Atlanta, where former wife Helga Glock is seeking a wealth of financial information from the U.S. subsidiaries of her ex-husband’s Austria gun company to bolster her claims for financial support.

A ruling allowing Helga Glock to subpoena corporate records in the U.S. for use in a foreign court could have implications for U.S. companies with business interests abroad that might face similar inquiries in overseas lawsuits.