BudsGunShop.com - Double action or striker fire?

This is a striker fired pistol. Some striker fired guns are considered more similar to a single action such as the canick series and the walther p99, because they have a "pre-coked" striker.
So when this became a trend many manufacturers (including SW) started labeling their non precoked striker fired guns as "double action" the trigger on this model is going to be similar to a glock, or sig p320, it is not as light and short as a canick or vp9, or CZ, or P99, but it is decent, and there are lots of aftermarket triggers available if you decide you want one a little better

Don, the 11687 is striker fired. >>> smith-wesson.com/product/mp-m20-compact?sku=11687

Don, The M&P 2.0, introduced in 2017, is the M&P's first major revision. The M&P is a striker fired pistol, which uses a striker rod instead of traditional hammer and firing pin to discharge the weapon..

This is most definitely a striker fired pistol.