Horrible writing, horrible characterizations. Horrible logic and action that made no sense.
But it all served to get rid of some of the excess baggage the show was lugging around, and give our main character a stake in the fight. So structurally it puts the show in a better place moving forward. We'll see if the show can take advantage of it.
Oh, and it was 7.62mm rounds, not 50cal.=p But yeah he should have been knocked down or possibly cut in half.