Most probably, the Wolverine Airsoft Hydra is now its way to various dealers and resellers in the USA, so better check with your retailer if they have it in stock. This video released shows how to install a version of the Hydra for the P90, and in this case it's the King Arms P90 AEG. The Hydra works with most AEGs (check the version) by swapping the nozzle to make it ready for HPA power.