Smith & Wesson M&P M2.0 Manual Safety. This OEM factory original manual safety is manufactured from stainless steel and polymer components for the Smith & Wesson M&P M2.0 pistols chambered in 9mm and .40 S&W. The lever is installed around the sear housing block and gives the user an ambidextrous safety option for their pistol. This part is perfect as a spare on the workbench or as an immediate replacement for a lost or damaged component.