Smith & Wesson M&P 40 Trigger Kit Installation

The trigger travel and pull weight can be significantly reduced on striker fired handguns with the installation of an aftermarket trigger kit. This is how I did it on a Smith & Wesson M&P 40.

by Glen Calvert

The Smith & Wesson M&P 40 handgun in this article had a long trigger travel (7/16”) followed by a 7.8 pound pull that released the striker after another 1/16” of travel. This is typical of older striker fired handguns. Gun manufacturers have improved the triggers on newer models. I have a Ruger LCP II that has a much better trigger than the original LCP. Aftermarket suppliers have seen the opportunity and offer kits to improve the trigger action on various makes and models. One of those is Apex Tactical Specialties (, 623/322-0200). They offer trigger kits for the S&W M&P and Shield models.

I installed the Apex M&P Aluminum Forward Set Sear and Trigger Kit. The kit includes an aluminum…

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