Pearce Grip Grip Extension, Fits S&W M&P 9MM Shield Plus, Adds 3/4 Additional Length, Black MPPL This unit replaces the magazine base plate on the M&P 9 SHIELD PLUS. This extension does not alter the capacity of the magazine. It adds approximately 3/4" inch additional gripping surface and incorporates a texture pattern similar to the frame. FOR 10 round magazines ONLY.NOT FOR EZ FRAMES.NOT FOR ORIGINAL SHIELD single stack FRAMES.