M&P pistols with a new “enhanced” trigger.

General Firearms Handguns - Semi Auto
1

New Factory Trigger for the M&P line of Pistols

http://www.thetruthaboutguns.com/2015/05/jon-wayne-taylor/model-comparison-highlights-excellence-of-smith-wessons-new-mp-trigger/

Very Good Article.

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To be honest, I’d still do an Apex upgrade. It’s much smoother than even their “premium” triggers.