Apex trigger alum.Duty/carry action enhancement kitm&p9/40! FEATURES:-Reduces pre-travel/over-travel by 20%-Reduces reset length-Keeps pistol at a safe 5-5.5lb trigger pull for duty/carry-Requires 1/8" sear block-Fits M&P 9mm/40S&W & M2.0-Aluminum trigger Other Features: Aluminum trigger, reduces pre-travel/over-travel by 20%, reduces reset length, keeps pistol at a safe 5-5.5lb trigger pull for duty/carry requires 1/8 sear block, does not fit m&p m2.0, does not fit m&p45, does not fit m&p shield, does not fit bodyguard or.22