Frame INSERT for S&W M&P Shield 9mm and .40 (NOT FOR 45 ACP MODELS). This unit fits in the bottom rear cavity of the M&P Shield utilizing a friction fit to secure it in the frame. Made of a high impact polymer, this insert is designed to keep out dust and debris as well as finish off the overall look of the frame. Black. Fits: M&P Shield 9mm and .40. Fits in the Bottom Rear Cavity. Made of a High Impact Polymer. Does NOT fit models without manual safety. Please note: Includes 1 Nimrod's Wares Microfiber Cloth per order, regardless of quantity purchased. Please note: Microfiber cloth may be black, tan, or gray.