Assault Rifle vs. Magnum

So when it comes to your primary weapon in battle, do you guys prefer one over the other? Which one works better for you?

I would go AR for the shields and magnum for the headshot

Magnum. Shoot them in the head a few times and its a kill. At far to medium distances obviously

Assault rifle all the way

Magnum. 3 Shot then melee. Easy.

AR.

Pistol except for close range.

Pistol for long range.

Pistol. Pew, Pew.

I personally prefer to run around with the pistol in more open spaces and the assault rifle down tight corridors and choke points.