Get a start on saving your money with TSD/Sapien Arms plastic propane adapter. A great item for owners of airsoft gas guns that run on what is known as "Green Gas" a propane and liquid silicon oil mixture. Green gas are not commonly sold outside of airsoft retailers and can be expensive, so airsoft propane adapters were developed to allow you to turn any 16 oz propane tank/cylinders into fuel sources for your airsoft gas guns. Adapters can come in both plastic and metal variants and do not effect the transfer of gasses significantly. However plastic adapters perform well enough as their metal brothers, but at less the cost. Features a o-ring sealed removable nozzle that can simply be unscrewed to easily access the tank's reservoir. A convenient feature for owners to drop in silicon oil in between fills so you may protect your gas guns' rubber o-rings from drying. Also includes a small bottle of silicon oil to get you started.