G3 with the long barrel. 1 shot kill, ALWAYS, if you hit center mass. Arms, or below the knee cap require two. I've tested this with the AI frozen, and it works every damn time. I love it. Makes me feel like i'm playing the first Insurgency again. It's a freaking 7.62x51mm round, so it SHOULD be a 1 shot kill. The points are nice and low, it allows for heavy carrier, heavy armor, and 3 molotovs/frags. It's a beast of a loadout and i love it.