This unit replaces the magazine base plate on the Taurus GX4 and GX4 XL, providing a grip extension that adds about 3/4 inches of additional gripping surface for enhanced control. While it does not increase the magazine's capacity, it features a texture similar to the frame for a seamless feel. The product is equipped with the patented PearceLock attachment mechanism for secure and easy installation. Pearce Grip extension designed for Taurus GX4/XL pistols