Few people understand modern combat pistol craft like Larry Vickers. After countless hours behind the pistol, he understands what will fall short in a gun fight. The one small flaw that could ruin your day is the OEM magazine base pad. It's undersized, and offers nothing should your empty magazine fail to drop free for a number of real world reasons. The VT Magazine Floor Plates are flared with grooved non-slip scallops for positive finger purchase. Stubborn magazines are easily extracted whether muddy, caked with ice or sand. Great for one handed reloads too..just hook magazine floor plate under your belt and extract quickly. Molded dimples allow for easy marking and numbering of magazines. 004 - Fits Smith & Wesson M&P magazine calibers 9A-19, .40, .357 SIG, Full size magazines ONLY, NOT for M&P Compact Magazines. 001 - Fits Glock magazine calibers 9A-19, .40, .357 SIG, .45 GAP. NOT compatible with early Gen 1 non-metal lined magazines. 002 - Fits Glock magazine calibers .45 ACP, 10mm. Tough glass-filled nylon for superior impact resistance Flared shape with grooved finger scallops offer plenty of grip Molded dimples allow easy marking and numbering of spare magazines Includes retainer plate to adapt any old style magazine to new style plate OA length: S&W - 1.86" / Glock - 1.55" Width: S&W - 1.47" / Glock 1.45" Weight: S&W 0.2 oz. / Glock - 0.1 oz. Made in USA