Airsoft GI announce that there's a 1 year warranty now with Airsoft Innovation's Propane Adapter Kit. More of this from Bob... "Have you ever run out of green gas? Even been in dire need? Well, with the Airsoft Innovations Propane adapter, you can now use propane to power your GBB guns. Be aware, for some manufacturers, using propane might void the warranty. However, this is great product for people looking for a quick way to power their guns."