How to Use The Caulking Guns?

A caulking gun is an industrial device, is a tool for injecting a liquid sealing material into a joint gap or groove.
When we use, the user holds the handle and pulls back the trigger. The pin of the trigger moves forward the actuator. The actuator engages the piston tightly and pushes the piston forward. The piston head opens the bottom of the caulk tube. Fix the caulking tube by filling the ring at the end of the gun.