Fix grip extension for S&W shield. Designed for M&P shield 9mm and 40. It will enhanced the ability to manage the recoil, stabilize and add support the gun. Adding the magazine extension to the magazine is a great asset to firing the gun by giving your next finger a place to rest and greater control. The extension does not interfere with concealment. You will appreciate the quality of Fixxxxer products. Fixxxer LLC is proud to be an American company. We stand behind our products, period. "smith & Wesson" "S&W" "M&P" "shield" are a federally registered trademark of smith & Wesson holding corporation. Fixxxer LLC has no affiliation in any manner with, or otherwise endorsed by, smith & Wesson holding corporation. The Use of "smith & Wesson" "S&W" "M&P" "shield" on this page is to advertise the sale of compatible parts or components.