The inner barrel of the ZCI Airsoft company which specializes in the production of precision airsoft parts. The barrel with a diameter of 6.02mm is made of high-quality stainless steel with a polished inside surface of the barrel. The barrel is equipped with an O-ring at the end of the barrel that centers the inner barrel in the outer barrel and also dampens vibrations. Installing this barrel in an airsoft replica improves precision and accuracy of the shot.