4UAD Smart Airsoft recommend their 4UANTUM Performance Lubricant Pen for use on lubricating your airsoft guns (of course). UAD and J-Smooth have jointly developed a high-performance lubricant for Airsoft guns. It contains Polydimethylsiloxane, TPFE, and paraffin wax, all of which are inert and non-toxic. The new formula provides high adhesion, abrasion resistance, and low friction, ensuring long-lasting protection and smooth cycling. The twist pen design makes it easy to carry and apply touch-free. It is safe to use on plastic and rubber components.