In Wisconsin we are taught a tactic known as the “G.U.N.” weapon retention system (Grab, Undo, Neutralize).
Grab: You grasp the suspect’s hands and lower your center.
Undo:You have several options, whether it be rotating away from the suspect while maintaining a grip on their hand/hands or striking with knees, fist, palm etc. I also recently attended training in which we maintained a grip on the suspect’s arm with your gun hand and “ripped” upward with our left forearm, with the strike being focused just below the suspect’s elbow. This causes pressure and pain on the elbows of the suspect’s arms and if done properly, could possibly cause the elbow to hyperextend or break.
Neutralize: The officer has the option to disengage from the subject and deploy O.C. or a taser etc. or the officer can direct the subject to the ground.