Taran Tactical Innovation Firepower Base Pad Kit Features The Taran Tactical Innovations Firepower Base Pad Kit is designed to work with the stock magazine spring adding roughly 1-1/2 inch to the front and 1 inch to the back of the magazine to increase capacity. Its patented proven push-pin design allows the pad to attach and detach from the magazine easily with no specialty tools or devices required for disassembly. The one-piece design means there are no extra parts to lose during takedown keeping maintenance simple in the field or at the range. Machined from billet aluminum and hard anodized the kit is built to withstand the wear of regular competition and training use. With the kit installed a Smith and Wesson M&P pistol holds 21+1 rounds of 9mm or 17+1 rounds of .40 S&W giving shooters extra capacity between reloads. The added weight at the base of the magazine helps it drop free more easily for faster more reliable reloads under time pressure. Built to fit the USPSA 140mm gauge this base pad kit is Production Division legal for competitors who need to stay within class rules. Used and endorsed by champion shooters the Taran Tactical Innovations Firepower Base Pad Kit is a proven upgrade for M&P 9/40 full-size pistols. Taran Tactical Innovation Firepower Base Pad Kit Specifications Manufacturer: Taran Tactical Innovations Model: Firepower Base Pad Kit Type: Magazine Accessory Compatible Hosts: Smith and Wesson M&P 9/40 Material: Billet Aluminum Finish: Hard Anodized Color: Black Capacity Increase: +2/+4 Rounds Available At: GrabAGun