Taran Tactical Innovations MPB940-00TTI M&P Firepower Base Pad KitHolds 20+1 rounds of .40 S&WHolds 23+1 rounds of 9mmPatented, proven push-pin designEasily attaches and detaches from the magazineNo specialty tools or devices required to disassembleOne piece design, no extra parts to possibly lose during disassemblyFits the USPSA 140mm gaugeNot Legal for Production DivisionThe added weight helps the magazine drop free easier for faster reloadsCNC machined from billet aluminumHard anodizedMade in the USALength, 1 1/2 inch front side, 1 inch on back sideOverall Weight 1.2ozUsed and endorsed by multi-time World and National Champions Jerry Miculek, Team Miculek, and Julie GolobFlat Black FinishIncludes:Firepower +5/+6 Base Pad10% Stronger Spring IncludedFits:Smith & Wesson Military & Police (M&P) 9/40 Model Full Size Pistol MagazinesDoes NOT Fit:Smith & Wesson Military & Police (M&P) 9/40 Compact Pistol Magazines