Smith & Wesson Base Pads and Insert
For High Capacity magazines only.
Will not work for ten round magazines.
Not For Sale In California
Models: M&P 9mm & .40 S&W
Extended Base Pad, add's 5 rounds in 9mm and 4 rounds in .40, M&P .45 +3
Overall length with new base 140mm
Included in "Kit" (RECOMMENED) Extended Base Pad, locking insert and +10% power spring.
Kit not available for .45 ( Use factory spring)