Grip Extensions Compatible with Taurus GX4 and GX4 XL. This unit replaces the base plate on the Taurus GX4 and GX4 XL. This grip extension will not increase capacity. Adds approximately 3/4" inch additional gripping surface. It also incorporates a texture similar to the frame. This product utilizes the patented PearceLock attachment mechanism. (US 10,996,010 B2). UPC: 605849300122. Brand: Pearce Grip. Type: Grip Extension. Fits: Taurus GX4 and GX4 XL. MPN: PG-HCGX. Please note: Includes 1 microfiber cloth per order, regardless of quantity purchased. Microfiber cloth may be tan, gray, or black.