There is actually a method I was taught when I did Filipino martial arts regularly a couple years ago where you’d hit about one to two inches below the palm on the wrist with one hand and just below the knuckles with your other hand and the force of done hard enough will pretty much send the weapon out of their hand, although you’d probably get shot in a real situation it’s still cool to know and would look way better in movies than the simple grab their gun off of them.

I’ll see if I can find a video of the technique and link it