Arm Trap RNC - Back Attacks

Setting up the Arm Trap Rear Naked Choke (RNC) from the control side:

1. Ensure your head is underneath your opponent's head to maintain control. Use your foot on their hip to keep their hips and head low.
2. Break your opponent's grip and establish a two-on-one grip to control their arm.
3. Push down on their hand and use your leg to trap their arm. If you can't reach, release your grip momentarily to push the arm down and then re-grip.
4. Once the arm is trapped, keep your heel pressing down towards their belly button and cross your feet, ensuring the foot trapping the arm is on the bottom.
5. Control their hand tightly against their chest to prevent them from breaking the grip.
6. Lift their chin by the nose and quickly slide your hand underneath their neck.
7. Grab your own trap muscle and pull your wrist into their neck while simultaneously pulling your elbow back to apply the choke.

This method is highly effective in modern Nogi Jiu Jitsu for controlling an opponent and securing the submission.