This unit serves as a replacement for the magazine base plate, retaining all other factory components without altering the magazine's capacity. Specifically designed for compatibility with factory Ruger 10-round magazines, this grip extension adds approximately 3/4 inches of gripping surface, enhancing comfort and control during use. Please note that these extensions are exclusively compatible with the LCP Max in .380 Cal 10-round magazines, providing a secure and ergonomic grip for improved handling.