“…These are often homemade and can cause lethal injuries. Homemade guns are produced in Brazil, Chechnya, Croatia, Germany, India, Italy, Philippines, Poland, South Africa, Sri Lanka, Turkey, and the United States of America . Various types of improvised firearms such as pistols, revolvers, pipe guns, and shotguns have been encountered in the crime and have been reported previously, where it was suggested to collect data regarding various aspects such as design and special features like tool marks .…”