Manufacturer: Pearce Grip. Manufacturer Part Number: PG-SP13. Model: Grip Extension. Compatible with M&P 9 Shield Plus 9mm 13/15 Rd. NOT compatible with 9mm 10 Rd, EZ frames, or ORIGINAL SHIELD "single stack" frames. Color: Black. Replaces the base plate on the M&P 9 Shield Plus. This extension does not alter capacity. This product is designed to help you keep a tight consistent grip without adding too much additional grip length. It adds approximately 5/16" inch additional gripping surface with an ergonomic curve providing a more positive grip than the factory sleeve alone. For 13/15 rd 9mm ONLY. Please note: Includes 1 Nimrod's Wares Microfiber Cloth per order, regardless of quantity purchased. Microfiber cloth may be tan, gray, or black.