The arm triangle is a high-percentage blood choke applied from top side control by isolating the opponent’s far arm and compressing both sides of their neck. It is a staple submission for both gi and no-gi, effective at all levels and highly favored in MMA due to its control and finishing potential.
Start
Top side control
End
Submission
Prerequisites: Cross-face control · Establishing an underhook · Head positioning basics · Shoulder pressure application
Steps
1
Establish strong side control
Secure a cross-face with your near-side arm and an underhook with your far-side arm; keep your chest heavy and hips low, with your knees pinched to limit their movement.
2
Isolate opponent’s far arm
Use your underhooking arm to walk their far arm up toward their head, pinning their biceps against their own ear; maintain chest pressure and use your head to block their arm from returning.
3
Transition your head to the mat
Slide your cross-face arm deeper, placing your head on the mat next to their trapped arm, forehead close to their wrist; your head should block their arm while you maintain shoulder pressure.
4
Thread your arm under opponent’s neck
Release the cross-face and thread that arm under their neck, aiming to connect your hand to your own biceps on the far side; keep your elbow pointed toward the mat to prevent space.
5
Lock the arm triangle grip
Grab your own biceps with your choking arm and place your other hand on their trapped arm’s side, palm down; keep your elbows tight and your chest low.
6
Adjust your body position
Walk your body off to the side of their head (toward north-south) at a 45° angle, dropping your hips and chest closer to the mat; avoid being directly on top to maximize pressure.
7
Apply finishing pressure
Squeeze your elbows together, drive your shoulder into their neck, and drop your chest; optionally sprawl your legs back for additional pressure, keeping your head low and tight to the mat.
8
Monitor for escapes and finish
If they attempt to bridge or turn, adjust your angle and pressure, maintaining the seal around their neck until you get the tap.
Key details most people miss
Your head must block their trapped arm from escaping—if your head is too high or far, they will recover the arm.
The choking arm’s elbow should be tight to their neck and pointed down, not flared out, to prevent space.
Walking your body off to the side (not staying directly chest-to-chest) increases the effectiveness of the choke.
Finishing pressure comes from dropping your chest and squeezing your elbows, not just flexing your arms.
Common mistakes
If you leave space between your choking arm and their neck, they can slip their arm out and escape.
If you stay too square on top, you reduce choking pressure and risk being rolled.
Failing to block their arm with your head lets them recover their frame and nullifies the choke.
If your hips are too high, you lose downward pressure and the submission becomes a crank instead of a choke.
Counters & responses
They try: Opponent bridges and turns toward you to create space.
You do: Walk your hips further toward north-south and sprawl your legs back to flatten them and maintain the angle.
They try: Opponent tries to dig their trapped arm free with their other hand.
You do: Drive your head deeper into the crook of their arm and pinch your elbow tight to seal the space.
They try: Opponent frames against your hip to recover guard.
You do: Drop your hips lower and windshield-wiper your legs to clear their knee, maintaining chest pressure.
They try: Opponent answers the phone (hand to ear) to relieve pressure.
You do: Walk your choking arm’s hand higher and drive your shoulder deeper, or use your free hand to peel their hand away before reapplying the squeeze.
Drill prescription
6 rounds × 2 min per partner; 50% resistance; goal: achieve full lock and tap within 30 sec, 3 times per round.
How the masters teach it
Roger Gracie
Emphasizes heavy chest pressure and perfect angle, often finishing without leaving side control.
Roger Gracie TV
John Danaher
Focuses on micro-adjustments of elbow and head position, and systematic transitions to mount if the choke fails.