Police Magazine Logo
MenuMENU
SearchSEARCH

Gaining the Upper Hand on Combative Subjects

Great strides have been made in police technology over the last 25 years. Advances are evident in almost every area of police work from the collection of evidence to the use of computers in squad cars. But when it comes to training, one law enforce­ment team has drawn from the past to develop a method for controlling vio­lent subjects.

5 min to read


Great strides have been made in police technology over the last 25 years. Advances are evident in almost every area of police work from the collection of evidence to the use of computers in squad cars. But when it comes to training, one law enforce­ment team has drawn from the past to develop a method for controlling vio­lent subjects.

Although electronic devices and pep­per sprays are useful in controlling resis­tive subjects, they have not proved to be wonder tools in solving physical con­frontation problems. In the end, it usual­ly comes down to a grappling situation to control a noncompli­ant subject. And with video cameras rolling, the public often sees several officers trying to contain one resistive subject. To an unin­formed observer, such action looks like excessive force.

Ad Loading...

Through televi­sion and movies, the media have influenced public perception regard­ing how police offi­cers should react to violent suspects. Fight scenes often depict officers con­taining a resisting person with one punch or baton strike. No matter how ski lied an officer is in defensive tactics and control, subduing a violent person is never as easy as it looks in the movies or a training environment. But there are techniques available to help officers on the street.

The CLAMP Control Technique

Larry and Chris Lein, a father and son team, have drawn from the past to come up with a highly effective method for controlling resistive subjects. A jujitsu/judo bent arm-lock technique, called Ude Garami, was refined and developed into the CLAMP Control Technique. "CLAMP" stands for the "Chris Lein Arm Management Program."

Both Larry and Chris have police backgrounds and are judo experts. Larry is a retired FBI special agent, and his son is a member of the Kansas City (Mo.) Police Department. Chris has used the CLAMP Control Tech­nique numerous times while working as a police officer, offering proof that the method works during actual physi­cal confrontations.

For five years, the two men worked together in a variety of situations to perfect their method. One basic tech­nique can be employed in a wide vari­ety of police arrest and control inci­dents. The method is based upon proper application of body mechanics and leverage to control subjects, rather than just cause them pain. It is simple to learn and apply, making it ideal for police officers to employ on the street. It can also be easily modified to adjust to the standard cooperative and uncoop­erative control techniques officers have already learned.

Ad Loading...

The CLAMP employs the very same principles used with the PR-24 police baton and the straight baton to control resistive subjects. The body mechanics used with this arm control technique are the same with or without a baton. Therefore, officers who understand the basic principles of the CLAMP can use the same method with a police baton. The technique also employs a basic grip that can be mastered and retained with little practice.

Controlling Subjects

Larry emphasizes that they "are not in competition with any other defensive tactics system because (their) method can be incorporated into other systems of arrest and con­trol." The CLAMP is designed to control uncooperative subjects and can work for officers of every size. The method can be employed on a resistive subject who is standing, kneeling, or lying on his back or on top of an officer. It can also be used to remove a subject from a cell or vehicle, and to subdue someone who attempts to grab an officer from behind.

Officers often feel that the techniques they learned at the academy do not work during real-life street confrontations. But the CLAMP has been used countless times in actual fight scenar­ios. Once officers practice this tech­nique during street simulation training, they often immediate­ly gain confidence. I have personally used the bent arm-lock method successfully in various free­style practice sessions with another subject who is an experienced grappler.

Using the CLAMP

Ad Loading...

No article or book on any motor skill can fully explain how a technique is performed. Without instruction from a qualified self-defense instructor, you cannot learn the vital nuances that make a technique more effective. The photographs in this article are demon­strated by an officer who has been trained to use the CLAMP technique. Chris Lein is the resisting subject in these pictures.

To practice the CLAMP technique from an interview stance in front of a subject:

  • Photo 1-Grasp the left wrist of the subject with your right hand as you step forward.

  • Photo 2-Place your left mm out­side and over the subject's left arm. Slip your left hand under the subject's arm and grasp your own right wrist.

  • Photo 3-Move behind the sub­ject while applying downward pressure with your left arm and move your right hand upward.

  • Photo 4-Use your body weight to sit down. This will force the subject on his stomach for handcuffing.

Practice slowly at first and use the pat-out method to let your partner know when you feel enough pressure.

Note: There are other variations to complete this hold on a subject who is on the ground.

Ad Loading...

A Final Note

Although there is no single solution to every use-of-force situation, the key to dealing with resis­tive subjects is to use a multifaceted approach. The more control options offi­cers have, the better they will be at sub­duing a combative subject, using only enough force to contain the situation. Remember, the secret to competency in anything is regular practice and reinforcement. •

Joseph Truncale is a professional police trainer, free-lance writer and retired police officer.

For more information on the CLAMP, contact Larry and Chris Lein at: 9757 N. Indiana, Kansas City, MO 64156. Telephone: (816) 734-9141

The contents of this article are for information purposes only and not intended to be a substitute for professional training under a quali­fied instructor. POLICE, the author, and Larry and Chris Lein accept no liability whatsoever for injuries to persons or property resulting from the information presented or implied in this article.

Topics:Patrol
Subscribe to our newsletter

More Patrol

Hands insert an Adept Armor protective plate into a camouflage tactical plate carrier, demonstrating how the armor plate fits inside the vest.
PatrolSeptember 17, 2026

Adept Armor Introduces Two New Rifle Plates

Adept Armor has launched two new Level IV ballistic plates, the Emperor and the Archon Mark 2, which brings Adept Armor’s new Quatroid ceramic to the high-threat, performance-value center of the range at 5.2 pounds.

Read More →
Open Benchmade folding knife with a bronze-colored blade, textured dark handle, and braided lanyard resting on weathered wooden boards.
Patrolby Wayne ParhamSeptember 17, 2026

POLICE Product Test: Benchmade Bailout

The Benchmade Bailout is a slim, lightweight carry knife with a deep-ride pocket clip and comes in a variety of blade steels and scales. Here is a detailed review of the Taiga Green Bailout, released earlier this year.

Read More →
Officer of the Month graphic honoring Deputy Lorne Juday of the Osceola County, Michigan, Sheriff’s Office for July 2026, featuring a portrait of Juday in uniform.
PatrolSeptember 17, 2026

NLEOMF Announces July 2026 Officer of the Month

NLEOMF honored a Michigan deputy sheriff as the July 2026 Officer of the Month for rescuing a trapped driver from a burning vehicle following a Fourth of July crash.

Read More →
Ad Loading...
Streamlight promotional graphic featuring the LiteBox 1 Million handheld light and Portable Scene Light III, highlighting products displayed for the 2026 National Safety Council Safety Congress & Expo in Indianapolis, Sept. 14–16.
PatrolSeptember 10, 2026

Streamlight to Showcase Newest Lighting Products at National Safety Council’s Safety Congress & Expo 2026

Streamlight will showcase its latest lights, including the Portable Scene Light III and the LiteBox 1Million, at the 2026 National Safety Council (NSC) Safety Congress & Expo.

Read More →
Graphic promoting the 2027 World Police & Fire Games in Perth, Australia, featuring an aerial city view and photos of international participants carrying Brazilian and Australian flags.
PatrolSeptember 10, 2026

The 2027 World Police & Fire Games Set for Perth, Australia

The 2027 World Police & Fire Games (WPFG) will take place in Perth, Western Australia, from Friday, March 12 through Sunday, March 21, 2027.

Read More →
New York City skyline at night with the Tribute in Light beams illuminating the sky in remembrance of September 11, with the 5.11 logo in the upper left.
PatrolSeptember 10, 2026

5.11 Partners with National Fallen Firefighters Foundation to Support #ForThe343

5.11 has joined the nationwide movement honoring the 343 New York City Fire Department firefighters lost on Sept. 11, 2001.

Read More →
Ad Loading...
Team Wendy graphic announcing sponsorship of the Jorge Pastore Foundation, featuring a black-and-white photo of Austin Police Officer Jorge Pastore, whose end of watch was November 11, 2023.
PatrolAugust 27, 2026

Team Wendy Announces Title Sponsorship of the Jorge Pastore Foundation

Team Wendy’s 3-year partnership with the Jorge Pastore Foundation expands access to programs that strengthen those who serve.

Read More →
National Law Enforcement Officers Memorial Fund graphic for the 2026 9/11 commemoration ceremony beside a close-up of a police officer’s badge, with blurred emergency lights in the background.
PatrolAugust 27, 2026

National Law Enforcement Memorial and Museum Hosting 9/11 25th-Year Commemoration Ceremony

The National Law Enforcement Memorial and Museum is hosting a 9/11 25th Year Commemoration Ceremony on Sept. 11 at 4 p.m.

Read More →
Officer of the Month graphic for June 2026 honoring officers of the Chico, California, Police Department, featuring the department’s police badge and a rose emblem.
PatrolAugust 20, 2026

National Law Enforcement Officers Memorial Fund Announces June 2026 Officers of the Month

The National Law Enforcement Officers Memorial Fund (NLEOMF) named 15 officers of the Chico Police Department (California) as the Officers of the Month for June 2026 for their roles in responding to an active-shooter incident at a public library.

Read More →
Ad Loading...
Three smartphone screens display the Team Wendy community app, featuring tactical gear content, upcoming events, news, surveys, and navigation tools for warranty, sizing, and user profiles.
PatrolAugust 13, 2026

Team Wendy App Creates New Digital Hub for Helmet Owners

The Team Wendy Community App provides one location for warranty registration, size-fit tools, product updates, and community connection. For helmet owners, the new app creates a simpler path to the information and tools that matter most.

Read More →