Apex Tactical Specialties Flat-Faced Forward Set Trigger Kit, Works with Smith & Wesson M&P Pistols. Does Not Function With M&P M2.0, M&P Shield, BodyGuard, 22 or 22 Compact Pistols 100-054 Designed to work in any Smith & Wesson M&P model pistol in all centerfire calibers" the patented Apex Flat-Faced Forward Set Sear & Trigger Kit reduces trigger pre-travel and over-travel to deliver an unparalleled trigger performance as close to that of a single-action 1911 but in a polymer striker-fired pistol.