A spare valve spring for JTS Airguns is a small metal spring that is used to control the flow of compressed air within the airgun's valve. It is specifically designed to fit JTS airguns and can be used as a replacement part if the original valve spring becomes damaged or lost. The spare valve spring is typically made of high-quality materials to ensure its durability and effectiveness in regulating the air flow within the valve. It is an essential component for proper airgun operation, as it helps to ensure that the airgun releases compressed air at the correct pressure for accurate and safe shooting. Without a properly functioning valve spring, the airgun may produce inaccurate shots or potential safety hazards.