some of these dont actually work, they just do them fo show to make them look bad ass, like where he bends his arm and kick him and he flys up and lands on his stonach, that would not happen when someone is resisting, or how the two guys sneak and grab his legs and he throws the gun, no that wont ******* happen
the kick is effective if you dont have a sword like that guy did, at least not with out getting your legs slashed pretty badly cause if someone ran up on my the first thing i would do is start swinging at the mother ****** .
It's got a basis in actual combat preparation but it is a show and they're choosing the more showy techniques as well as some unrealistic ones that give a better show