後襟絞
Also known as: RNC · mata-leao · hadaka-jime · mata leão · hadaka jime
Sliding the forearm across the jaw instead of under the chin.
Why it failsYou get a face crank that they can defend by turning; it hurts without threatening the strangle.
FixUse your free hand or a shoulder bump to move their chin, then feed the arm underneath.
Squeezing before the second arm is behind their head.
Why it failsWithout the figure-four the pressure leaks and they peel the choking hand off.
FixComplete the grip — hand to bicep, second hand behind the head — and only then expand.
Losing chest contact while hunting the grip.
Why it failsThey create space, turn into you, and the back is gone before the choke lands.
FixKeep the seatbelt and chest connection throughout; give up the grip attempt before you give up the position.