When it comes to massage guns, torque (or locking force) is a measure of the force that can be applied before it stops. This is why it is also referred to as stagnant force. Popular massage gun brands have locking forces of 40 to 60 pounds, which means you can exert a maximum pressure of 60 pounds on the massage gun before it stops. This amount of torque is enough for a massage, as people who give massages usually only invest a small fraction of their body weight in the massage.
The locking force may vary depending on the brand and price of the massage gun, with forces ranging from 25 to 80 pounds. The stroke length determines how far the massage head moves back and forth and, more importantly, the depth of the muscle it reaches. If you lead an active lifestyle, you'll want one that can apply a stronger massage to break down lactic acid and promote performance and healing. A massage gun with a longer battery life will also allow you to give yourself a massage without worrying about the battery running out.