Grip Extension Compatible with Springfield Hellcat and Hellcat Pro (not 10-rd). This unit replaces the base plate on the Springfield Hellcat and Hellcat Pro (not for 10-rd Pro). 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). ***NOTE***: Will NOT work on factory 10 round HELLCAT PRO mags with extended plastic spacers. UPC: 605849300122. Brand: Pearce Grip. Type: Grip Extension. Fits: Springfield Hellcat and Hellcat Pro (not 10-rd). MPN: PG-HCGX. Please note: Includes 1 microfiber cloth per order, regardless of quantity purchased. Microfiber cloth may be tan, gray, or black.