Colt's Manufacturing Co.—one of the largest and oldest makers of firearms in the country—is suing a one-man shop in Texas for federal trademark infringement violations.

In a 43-page lawsuit filed June 30 in U.S. district court in New Haven, Colt claims that Ajax Grips LLC, which makes handgun grips, has been marketing and selling “imitation peal grips inlaid with steel Colt medallions bearing the Colt marks in commerce throughout the United States.” In addition, the suit states, “Ajax is also advertising that the imitation medallions are installed on all Colt grip models, which include Colt's 1911 and single-action army models.”

The lawsuit maintains that Ajax and its owner, Paul Rosenberg, have been advertising the product on its website, Facebook and other ways via social media.