Performance parts for full size and compact M&P pistols.
Multiple springs recoil reduction system. http://www.youtube.com/watch?v=OpHN-meR3CU
Extra power magazine spring by Wolff Gunsprings.
Weighted recoil springs for use with Wolff steel recoil rod.
Reduced power striker spring.
Steel guide rod for use with Wolff weighted recoil springs.