In this segment of BJJ Building Blocks, Nic takes an indepth look at the Brazilian Jiu-Jitsu Armbar from Guard.. The technique can be very difficult to pull off successfully against another Jiu-Jitsu player because they know it’s coming and can defend against it, especially if you just try grabbing the arm and throwing your hips over. Nic covers the details required to make the arm lock from guard a high percentage move in your game.