Designed to work in any Smith & Wesson M&P model pistol in a centerfire caliber the Apex Flat-Faced Forward Set Sear & Trigger Kit reduces trigger pre-travel and over-travel while allowing the shooter to position their finger at an increased leverage point lower on the trigger face to take advantage of lower trigger pull weights. NOTE: Not for use in the M&P M2.0 models any M&P Shield models or .22 caliber M&P models.