Airsoft Innovations GunGas propane Adaptor Kit Scientific testing has proven that most brands of airsoft “green gas” are just propane dressed up with a fancy label! That means airsoft players have been paying at least $15US + S&H for a container of the same stuff that’s available for $3 at your local hardware store or camping supply. To make this deal even sweeter, AI’s combined our adaptor with silicone oil and a duster adaptor to make a complete GunGas kit containing pretty much everything you need to maintain your GBB! The duster adaptor doubles as a repair tip in case you damage your propane adaptor tip. Comes with easy to inject silicone oil to maintain your mags Soft sealing plastic tip doesn’t mar brass magazine fill valves. Comes with a repair tip in case you damage the propane adaptor tip.