Airsoft Atlanta got in stock air tanks from HK Army made for HPA players. There are regulators and nipple fill cover that can go with these... "Full restock on 48/3000 HK Army HPA air tanks tonight! Red, blue, od green, black and new silver colors. Lots of Wolverine HPA engines back in stock and ready to ship too. Our Atlanta shop also does air tank refills if you get a tank or unlimited free refills at the Power Ops field in Conyers."

HPA-airsoft users can check out these Ninja Air Tanks at Airsoft Atlanta... "New Ninja Paintball 90/4500 carbon fiber tanks in Olive Drab Green are in stock. Same quality as a the legendary Grey Ghosts, but now in awesome green! Perfect for airsoft! V2 ProReg and standard regulators for SLP and non-SLP rigs (4 choices)."