Leglocks are a general term used to describe attacking the joints and muscles of the leg. For example a leg lock could attack the foot for a variety of ankle locks / heel hooks / knee bars / toe holds. A leglock can also define attacking the knee joint with a knee bar or even with the heel hook. Some attack the large joints of the knee or hip and involve utilizing leverage to counteract the larger muscle groups, while others directly attack ligaments in the knee or the smaller joint of the ankle. Some leg attacks also crush muscles, like the calf crush.
Leglocks have been around a long time and varied history; you can find them in old Japanese Jujutsu, Catch Wrestling and Sambo books. Leg locks were used by many of the traditional Jujutsu schools in Samurai Japan, Pre WW2 Judo and Catch Wrestling. And then... it started fading away. Japanese Jujitsu lost it's popularity to BJJ, Judo banned leg locks from competition, Catch Wrestling lost its popularity, and BJJ looked at leglocks as dirty techniques.
But they have experienced a strong surge in popularity over the past few years. Most of this is due to a combination of new submission only grappling events, and the innovative approach to leg locks by Dean Lister, John Danaher, and others.
New entries, approaches and leg attacks have been "discovered" and the positions for how to get leglocks have become more defined. There's actually systems around attacking the leglocks, while before they were just a submission.
The key component of a leg lock is isolating your opponent's foot or knee, as well as controlling your opponents movement by "locking" into the hip as well. As with other joint locks, leglocks are more effective with full body leverage.
Leglocks can also make a great controlling position / attacking position for other techniques. For example, 50/50 Guard and Single Leg X, are essentially leg lock positions. In fact, the more you look for leglock attacks, the more you see that they are EVERYWHERE.
What makes leglocks so effective, is that they don't require the strength and size that some upperbody submissions might require. For example, have you ever tried to apply and arm lock or arm bar against a larger, stronger opponent? It's nearly impossible. How about a triangle choke or guillotine choke. It can be quite difficult to choke a larger opponent with no gi chokes.
But - leglocks are the great equalizer! Size and strength don't matter against the joints of the foot.
What also makes leg locks all the rage right now, is that you don't need to be a top level BJJ expert to pull them off. In fact, most seasoned IBJJF Black Belts are still blue belts in the leg lock game. They understand the concepts, but don't know how to attack them as a seasoned no gi submission grapplers.
Leglocks are found in a variety of different grappling styles including Catch Wrestling, Sambo, Judo / Japanese Jujitsu, and Brazilian Jiu-Jitsu. Though in many BJJ tournaments, there are a lot of restrictions on leglocks, and heel hooks are completely illegal.
This debate over if IBJJF should allow heel hooks or expand their rules for leg locks is an ongoing one. What's cool is that other events such as ADCC, EBI, Kasai, Etc are starting to gain more popularity, and showcasing more grappling styles than just BJJ.
Currently leg locks are all the rage in the jiu-jitsu / grappling world, and there a few reasons why. First, as mentioned above, the limited rule-sets in IBJJF have allowed other grappling competitions to start taking the spotlight due to their favorable rules for submissions. IBJJF fighters tend the play the point game, while submissions based events create more opportunities for submission finishes. Leg locks have become the number one options for quick finishes in submission grappling.
Note: it's funny, not even 5 years ago, most jiu jitsu schools frowned upon using leg locks. They were considered "cheating" and dirty fighting. Not anymore!
Another reason is that leglocks are powerful. You can quickly find success with them in your dojo or competition. You don't need to go through elaborate sequences such as sweeping, passing, establishing control, etc. Now, the leglock attacks can be found everywhere and quickly end the fight.
Be weary though in training / sparring. When you are learning leglocks, you should attacking them in a slow controlled manner. We tend to establish a grip and solid control position, and then slowly finish the technique while waiting for the tap. There's no reason to be a hero when training leg locks. You WILL tap a lot. That's part of the leg lock game. In order to learn the leglock game, you must tap a lot.
LEGLOCKS STYLES & VARIATIONS
There are many grappling styles that use leg locks. One of the first references we can see is in old Japanese Jujitsu Curriculum. This includes the Single Leg X position, Ashi Garami (heel hook), Ashi Gatame (Straight Ankle Lock), Hiza Gatame (knee bar) and more.
Catch Wrestling is also known for their leglocks. One of the most popular grappling styles who are known for their vicious awesome leg attacks is the Russian Martial Art: Sambo. Below you'll find links to different grappling styles and their approach to attacking leg locks.
Judo / Japanese Jujitsu Leglocks
Japanese Jujitsu and Judo are one of the major influences on leglocks. Though the are illegal in judo and IBJJF competitions, the Ashi Garami was one of the first "throws" to be documented in Judo. There was ground fighting in most martial arts from around the world, and many Jujitsu styles had methods of ground fighting. But it really became a science for some of the practitioners of Fusen Ryu and other Jujitsu styles in the mid to late 1800’s.
Leglocks is the Japanese Martial Arts are taught mostly as self defense techniques. When an opponent is standing over you, and you are grounded in the bottom guard position. Ashi Garami, basically single leg x with a reap, is a powerful technique to take our your would be attacker using this vicious leglock submission.
Catch Wrestling is also known for their extensive leg locks. It's difficult to say where catch wrestling got it's influence for leglocks, but it is a big part of their system. Neil Melanson, Josh Barnett, and Dean Lister has trained extensively in catch wrestling, and are known for their leg lock attacks.
Neil Melanson is a very innovative catch wrestler who has many creative entries and attacks for BJJ and MMA from the Catch Wrestling world.
Sambo has roots in several different martial arts types, drawing from many of the older styles. Sambo was meant to be a melding of all of the different martial arts styles available to come up with the most efficient one yet. . Sambo actually translates to "self-defense without weapons."
Living in what amounts to a bridge between Europe and Asia, the Russian people were certainly introduced to a variety of martial arts styles via contact with the Japanese, Vikings, Tatars, Mongols, and more. The combination of what worked from these styles served as the building blocks to what is now referred to as Russian Sambo.
Sambo practitioners are known for three things: takedowns that combine wrestling and judo techniques, ground grappling skills, and leg locks.
Vlad Koulikov is a BJJ Black Belt, Judo Black Belt and a Sambo Master of Sport (National Champion). He is known for his incredible takedowns and transitions to a variety of different leg locks. He has one of the strongest and tightest straight ankle locks you'll ever experience!
Brazilian Jiu Jitsu
In recent history, leglocks are starting to gain a lot of popularity in Brazilian Jiu Jitsu. Even though some leg locks are illegal in BJJ (heel hook), the world of leg attacks is greatly expanding with the influence from other styles, as well as submission only competitions where all leglocks are legal.
Previously, the BJJ world tended to shun leg locks and thought of them as cheap or even cheating. In fact Helio Gracie publicly would call foot locks "Suburban (Ghetto) Techniques".
Basically it was too easy to get leg locks, so the sport of BJJ made it "low class" to attack the legs. There are some great leg lockers in BJJ though. Felipe Pena is one of them, who is known for his straight ankle lock from 50/50 in a gi.
There are many variations of leg locks. Just like the upperbody, there are many ways you can submit your opponent with leg attacks. The most challenging part of leg locks can actually be getting into the leg lock control positions. This is why the entries to leg locks are just as important as the leglock submission itself.
The techniques depend on the part of the leg you are going to attack. According the John Danaher, the most successful or high percentage leg locks and the inside sankaku (cross ashi garami (heel hook)) and outside ashi garami. The foot / ankle is one of the most powerful submissions against stronger and bigger opponents.
Heel Hooks / Ashi Garami
The heel hook is the most powerful leg lock and cause extreme damage to your opponent's foot and knee. It is a leg lock that attacks multiple different joints, which starts with the twisting of the heel, which transfers the tension into the knee. If your opponent can't roll out or escape, they will feel the tearing in their knee.
There are a few variations of heel hooks, most commonly uses is the Inside Sankaku aka Cross Ashi Garami or the Outside Sankaku aka Outside Ashi Garami.
What's really evolved the game of heel hooks lately is the creative way modern submission grapplers, like Craig Jones (seen above), Eddie Cummings, Gary Tonnon, Gordon Ryan, and others are finding different ways to enter into heel hooks from a variety of different positions... including the guard(s) like butterfly guard, half guard, and of course 50/50 guard.
The heel hook is a very dangerous leg lock submission. Most competitions that allow heel hooks (NAGA), always have someone limping off the mat with a destroyed knee. Yes, they are dangerous, but that doesn't mean they should be banned. The real danger is when your opponent puts it on so fast that you can't tap or your opponent holds it on too long (after tap) and destroys the knee. Rousimar Palhares was famous for this and was banned from the UFC after multiple infractions of not releasing the heel hook after his opponent had tapped.
Straight Ankle Lock
The straight ankle lock submissions uses two types of pressure to cause pain and breakage in the foot or ankle. One submission pressure comes from hyper-extending the foot. The toes are stuck in the arm pit, while you apply pressure up, and rolling your shoulder down and back. This pressure will break the foot. The second pressure comes from attacking the Achilles tendon. If done correctly, it feels as if your forearm bone is slicing through the tendons and going to snap the whole foot off at the ankle.
There are many variations of grips to attack the ankle lock that will all cause different breaking points or pain in your opponents foot. Depending on your body type and how you attack the ankle lock will determine the type of leg lock submission your opponent will tap to.
The Estima Lock is now one of the most popular and powerful footlocks in BJJ / Submission Grappling Competitions. The Estima Lock comes from the famous Estima Brothers: Victor and Braulio, and gained popularity after Victor Estima used the trademark leg lock to win the 2011 No Gi Worlds, by submitting all his opponents with the now popular Estima Lock.
Many of the worlds best Black Belts have been perfecting this submission and applying different variations of it. The Estima lock is often used in submission only competitions such as EBI, F2W Pro, Kasai, ADCC and Gracie Worlds.
The foot lock itself traps your opponents toes into your stomach, while establishing a few different grips that will isolate and secure the foot. The goal is the keep your opponents toes facing into your stomach, while then providing forward motion in the hip, and trapping your own opponents hip by throwing a leg over. It feels like a combination of a toe hold and straight ankle lock.
One of the best examples of a toe hold that I heard, is that it is like the "kimura" of the foot, except the levers are much smaller. The toe hold came from Judo / Jujutsu and was called ashi dori garami, meaning "entangled leg dislocation".
The submission itself comes from keeping your opponents foot close to your chest, while establishing the kimura grip with your little finger. While keeping the ankle portion of your opponents foot locked into your chest, apply pressure against the foot and try to make your opponent's big toe touch his own ankle, or another common tip for the toe hold submission "Put his toe in his own ass". :)
A kneebar or in Jujutsu / Judo: hiza juji gatame is a leg lock that attacks and submits the knee by hyperextension. Essentially the knee bar, is the arm bar of the legs. With the arm bar you trap your opponets shoulder / head with your legs, and all your hip pressure is against the elbow. The knee bar traps your opponent's hips with your legs, and use your whole body to trap and extend into the knee joint.
There are a variety of grips and entrances that you can use. Sambo is known for their rolling knee bar attacks from a variety of different takedown counters / setups. John Danaher isn't the biggest fan of the knee bar due to the easier to get option: heel hooks.
Catch Wrestling bad-asses like Dean Lister, Josh Barnett and Neil Melanson are all master of the knee bar due to it's popularity in Catch Wrestling.
Calf Crush / Calf Slicer
The Calf Crush or sometimes called the Calf Slicer is another Jujutsu / Judo technique called hiza-hishigi. The submission itself doesn't "break" the calf. It does compress and cause a lot of pain. But if there was damage, it would come from the separation of the knee point.
The misconception is that this is only a pain related submission, but the reality is that the calf slicer can cause a lot of damage to the knee and calf muscle itself.
The kimura shouldn't be looked as jump a submission. The kimura is a system that needs to be studied in order to find true success with it. There are many different paths to discovering the secrets of the kimura from some of the best submission grapplers in the world.
Our suggestion for learning the kimura lock and all it's applications is to find a grappling expert who's built like you, or shares a similar style to you, and study how they attack the kimura. From there, explore other athletes and learn their approach to pick up the golden nuggets of grappling tips that will make you a kimura master!
LEGLOCKS: ENTER THE SYSTEM BY JOHN DANAHER
What is the one technique that John Danaher is perhaps best known for though? The leg lock. The leg lock is the great equalizer in Jiu Jitsu. John Danaher is a master at breaking down how to get leg locks and foot locks that are both IBJJF legal and perfect for submission only grappling
It doesn’t matter if you are big, strong, fast or flexible; all that you need to apply a successful leglock is the knowledge. John Danaher has guided guys like Eddie Cummings and Gordon Ryan to leg lock submission only tournament stardom in a fraction of the time that it would take ordinary people.
He's now ready to share with you the knowledge that makes him one of the most saught after submission grappling instructors in the world.
THE K.A.T.C.H. LEG ATTACK SYSTEM BY DEAN LISTER
The ORIGINAL Guide to Leg Locks, by one of the scariest and toughest grapplers on the planet: Dean Lister.
Dean Lister’s Approach to Leg Locks Is Almost Like Cheating ... For one, most of your opponent's won't know how to defend your attacks. Yes, maybe they've seen a leg lock before - but Dean's details in the grips, movements and connection points will quickly raise your understanding of the great equalizer known as a leglocks.
This 4 DVD set will teach you all kinds of different leg attacks and set ups from one of the best in the business, Dean Lister. The K.A.T.C.H Leg Attack System is the most complete leg attack systems on DVD and is taught with competition tested methods. Dean Lister has shown time and time again, that his system can beat some of the best in the world.
DOWN UNDER LEG ATTACKS BY CRAIG JONES
Learn The Leg Lock System That Craig Jones Used To Become The Most Talked About Grappler In The World – Just 2 Years After Starting To Learn Leg Attacks
Using this style of grappling, attacking the leg locks from guard (half guard, butterfly guard); Craig Jones has submission victories over Leandro Lo, Murilo Santana, Nathan Orchard, Darrah Oconaill, and Chael Sonnen
Submission-only grappling events tend to suit Jones best. This allows him to showcase his style of pulling guard and attacking the legs, most specifically the heel hook. In fact, seven of his 11 submission victories in 2018 were via the heel hook. His strategy has allowed him to climb deep into several recent no-gi tournaments, including EBI and the prestigious ADCC Championship.
Craig’s system is very easy to learn. There are some pieces to it, but he was able to go from a Purple Belt to one of the best Black Belts in the world in just 2 years.
The question is, do you have the dedication to become a leg lock super-star like Craig (or least the Academy super-star)? If not, at least you'll add some awesome leg lock attacks to your arsenal :)
THE KNEE-BARGES LEG ATTACK SYSTEM BY GABRIEL ARGES
Learn The Secrets To Finishing Kneebars Against The Toughest Guys In Your Gym Or Tournaments. Even Those Cocky Upper Belts Who Think They Know Everything :)
Learn arguably the best Knee Bar in the world today. Gabriel has been able to utilize this lower body attack at the highest levels on numerous occasions. He even won the FINALS of the BLACK BELT adult World Championships via Knee Bar.
Gabriel Arges is an UNDEFEATED 2 x Black Belt World Champion And Is Finally Revealing His Most VICIOUS Kneebar Secrets!
If you've ever wanted to learn the knee bar, there is no one better than Gabriel, and he's sharing his secrets with you now.
HIGH PERCENTAGE IBJJF LEGAL FOOTLOCKS BY MIKEY MUSUMECI
There’s no doubt that leg locks are one of the hottest trends in BJJ right now, and people are seeing more success at the elite levels than ever before as leg lock artists. The big problem? Most of those leg lock techniques and strategies are illegal in the gi! The IBJJF and most other major Brazilian Jiu-Jitsu leagues are more restrictive with what they allow below the waist, so a lot of people just abandon the leg locks altogether.
Enter Mikey Musumeci. Mike is arguably one of the most technical and analytical grapplers on the planet. He has more foot lock submissions at worlds than anyone else, and is the most winning gi grappling of all time. He's a 2x IBJJF World Champion and known for his innovative IBJJF Legal Footlocks.
There is a system that Mikey uses, and it starts with the straight ankle lock. After you have mastered the straight foot lock, graduate to learning how to finish the fight with a more advanced toe hold, kneebar or calf slicer. See how you can set the trap and take advantage of your opponent’s choices. Just when they think they are out, you are attacking in a new way, locking on a new hold. Once you are done with the submissions, add in the final connective tissue by using the leg locks to sweep, going from submission to back take with one of the best back take artists in the game today.
Dominate IBJJF Competition with legal footlocks by the most accomplished gi grappler in history.
LEG ATTACKS & GRAPPLING HACKS BY DEAN LISTER
Dean is the winning-est American at the biggest No Gi Tournament in history: the ADCC – he has won 3 times and he has positively dominated with leglocks including a historic victory over the #1 grappler in the world at that time in 2011 – Rodolfo Viera – when he was 37, 40 lbs over his UFC competition weight and crippled with back and neck pain.
But when Dean unleashes his devastating leglock system, even the best guys in the world are powerless to defend it.
LEG ATTACKS & GRAPPLING HACKS DVD set is packed with over 40 Video Lessons with Attacks that will absolutely transform your game.
It doesn’t matter what belt your opponent is or how athletic they are. With Dean's leg locks you are good and they suck… it’s over.
THE ASHI LEGLOCK SYSTEM BY JAY WADSWORTH
Do you compete in NAGA or local submission focused no gi grappling tournaments? Or do you train a lot of no gi? If so, you will really benefit from learning these techniques. This is the most deadly position in No Gi Grappling It starts in Single Leg X and, bing, bang, boom, the fight is over. All of the best new school no gi grapplers can do whatever they can to defend, but once you've locked it in, it's over.
Jay Wadsworth is an elite cop by day and a well known No Gi teacher and competitor by weekend and night. He's an everyday guy who has a great understanding of the ashi garami game, and provides some of the best coaching and tips we've ever heard for this deadly position.
LEGLOCKS 101 BY CHARLES HARRIOTT
Learn how to safely implement leglocks into your game and learn everything from the ground up
Too many people are afraid of leglocks. They think that if they start training leglocks they are going to get injured or injure their partners. The problem with lower body attacks is that people do not know how to introduce them. Charles is here to give you his safe curriculum and show you how to adapt lower body attacks
After spending hours upon hours and years learning leglocks, and competing in no gi competitions, he found that the biggest mistake with leglocks is that they are not taught as a curriculum. People just learn one heel hook and one toe hold, but they never develop a safe approach to these attacks. They fail to learn a systematic approach and this makes them dangerous.
This extended study allowed him to place his own creative signature on the art, and now you too can learn the essential movements, entries, and technique combinations to revolutionize your leg lock game.
That is why he developed his introductory leglock curriculum "Leglocks 101."
Charles has spent years developing an easy to learn, safe and extremely effective curriculum to safely introduce leglocks to anybody at any belt level, skill level, age, height, athletic level, and size.
411 LEG LOCK SYSTEM
ROY DEAN BLACK BELT ALAN SHADE SHOWS YOU EVERYTHING YOU NEED TO KNOW IN THIS MUST HAVE GUIDE TO THE 411, THE MOST POWERFUL LEG LOCK POSITION IN JIU JITSU TODAY.
Complete as a stand alone guide, and a perfect compliment to the works of leg lock specialists John Danaher and Craig Jones, The 411 Leg Lock Instructional is a key resource for the modern jiu jitsu era.
Over 20 years ago, Professor Roy Harris pioneered the use of foot locks in Brazilian Jiu Jitsu, and taught it as a critical submission skill to his student, Roy Dean. Now Dean's black belt Alan Shade, motivated out of necessity by a broken jaw and a lengthy reconstruction, has delved deeply into the realm of controlling and submitting the lower body.
This extended study allowed him to place his own creative signature on the art, and now you too can learn the essential movements, entries, and technique combinations to revolutionize your leg lock game.
If you were to ask 5-10 years ago, who are the experts in leg locks? First, you would probably be answered with "why the hell do you want to do leg locks, they're stupid and you're stupid for asking". Second, no one in BJJ was doing them. There were a few here and there, but no one was destroying everyone with leg locks.
Then - the BJJ and grappling world got his with some booms! These guys (below) have completely revolutionized the leglock game. Now leg lock submissions are considered the great equalizer, and these guys are the ones who are responsible for their rise in popularity.
John Danaher is one of the most sought after instructors and coaches at the Renzo Gracie Academy in New York City.
With the help of BJJ Fanatics, he has graciously shared his complete system of leg locks in the most eagerly anticipated BJJ instructional of all time. This instructional sets itself apart in a number of ways. First in sheer quantity of content. John Danaher has made himself well-known for taking a very conceptual and philosophical approach to his grappling instruction. Therefore, an instructional which attempts to encapsulate his philosophy of leg submission must contain far more than just a series of techniques. This collection clocks in at well over 9 hours of content, nearly 4 times the length of any other BJJ Fanatics offering.
Craig has taken the BJJ community by storm but he has an extensive list of accolades and submission finishes over some of the toughest grapplers in the world. His secret? Leg locks.
Craig is mostly known for his savage lower body attacks but he is in no way, shape, or form a one trick pony. When he submitted Leandro Lo it was with a choke from the back and when he was able to catch Murilo Santana he was able to finish a triangle. These are arguably his best submission wins.
Many have actually started calling Craig, the new Eddie Bravo. He's innovative, technical, and has the skills to back it up. Craig Jones actually has released our best-selling instructional DVD ever called Down Under Leg Attacks.
Dean Lister is one of the pioneers of both jiu jitsu and mixed martial arts, having been one of the earliest leg attack experts who could arguably have been responsible for the rise of the current crop of leg attack gunslingers like the team known as the Danaher Death Squad, made up of the likes of Garry Tonon, Eddie Cummings, and Gordon Ryan among others.
As an instructor and coach, Dean Lister has been sought all over the world for his combat knowledge. He's known by keeping an open mind and absorbing effective techniques from other disciplines, he brought a leg lock foundation that he was able to build on and achieve a high degree of success with throughout his career.
Dean Lister burst onto the high level grappling scene bringing knowledge of lower body submissions and systems nearly two decades ago and used this knowledge to dominate the ADCC mats.
Legend has it that his discussions with Renzo Gracie black belt John Danaher years ago is what opened the mastermind behind the Danaher Death Squad's eyes regarding lower body submissions. Essentially, the story goes that Dean asked why should we only focus on half of the body when it came to our grappling? Such a simple question, but one that challenged the very metaphysics of BJJ.
Dean Lister is also a much sought after instructor and one of the first American's to put much of his teaching out there for students to learn from. From his K.A.T.C.H system where he teaches all of his favorite leg attacks, to wreak havoc on opponent's knees, toes, heels and ankles.
Mikey Musumeci holds the prestigious honor of being the first American to win two IBJJF World titles at black belt. He's a young, technical athlete who received his black belt in 2015 at the age of 18 from Gilbert Burns. Mikey Musumeci has achieved world titles at every belt level along the way to becoming only the 4th American to win the black belt world title in his first year as a black belt. He repeated the next year, becoming the only American to win two black belt world titles.
He holds the record as The Man With The Most Footlock Submissions At Worlds – 2 Years Running & Most Winning Gi Grappler In History.
He specializes in IBJJF legal footlocks from guard, especially during the double guard pull.
Gabriel Arges is a multiple time world champion black belt fighting for the Gracie Barra team under the direction of Romulo Barral and Felipe Pena. He is one of the most decorated competitors of the new generation, bringing an exciting style to all of his matches and earning himself a place as one of the top ranked gi and no gi competitors in the world currently.
Gabriel Arges is an definitely an innovator of the kneebar from 50/50. He’s added some life to the position with some new ideas and concepts. His “KneebArges” technique is a simple concept, yet creates a lot of problems for his opponent..
LEG LOCK VIDEOS
There are countless videos on leg locks. Every since they've gained so much popularity, it seems that EVERYONE wants to be an expert on leglock submissions.
Below you'll find some of our favorite leglock submissions and attacks. A mix of leg lock instruction to some matches with great leg lock finishes.
Leg Locks Enter The System by John Danaher
John Danaher is the master at breaking down the components of the leg lock game and guaranteed to improve your leg lock submission percentage.
The Outside Heel Hook Master Class By John Danaher - Taught To 5X World Champion Bernardo Faria
A very unique video with 2 of the best technicians in Brazilian Jiu Jitsu. A cool insight on how to attack and finish the outside heel hook.
Leglocks in MMA highlight Video
Leg Locks have a long history in MMA and have become powerful submission finishes. They are starting to see a new surge with the recent success of leglocks in submission grappling events.
Leg Lock Tutorial and Training with Eddie Cummings - Firas Zahabi - Jiu-Jitsu
The Heel Hook is the Knock-out punch of grappling, it came be a applied from a variety of positions and can achieve a break in an instant. Many BJJ schools ban this maneuver and claim that it is too dangerous and is sometimes consider a "cheap" move. I couldn't dissagree more. The Leg lock is a highly technical submission hold. In regards to safety, the leg lock can cause a break far faster then a armlock or Kimura and should be train with a higher level of precaution.
Leg Pummeling Inside Control Drill by Charles Harriott
Check out this awesome take on leg pummeling concepts with black belt, Charles Harriott. Charles is a Bjj Globetrotters Instructor and he just released an instructional video series to help you start doing leg locks. This is one of the best drills that you can do to start learning the concepts of where to attack for leg locks.
Eddie Bravo - Leg Lock Philosophy
Leg Lock concepts from the legendary Eddie Bravo. An important part of this video, it seems, is how and when to easily lock in ("pop-in") the Heel Hook from Ashi Garami after getting into position.
Leg Locks Attacks for: BJJ · MMA · Submission Grappling
Vlad Koulikov has a viscous straight ankle lock for BJJ and MMA. The foot lock setup is the key, and the bite he gets on the ankle lock is very, very tight.
A Guide To The Main Leglock Positions: Ashi Garami, Saddle, Leg Knot, 50/50, Outside Ashi
Professor Gustavo Gasperin demonstrates and explains how to identify the 5 main Leglock positions: Ashi Garami, Inside Sankaku, Leg Knot, 50/50, and Outside Ashi Garami.