I have 3 metal tanks. I am keeping one for myself for my pcp airguns. The one with the adapter is not for sale. 2 are for sale. They are not certified anymore. But they might be able to be re certified again for scuba? Not sure? Or fill them yourself like I do for my airgun. No scammers or tire kickers. If they are up here. They are still available. Call Bob show contact info
. I screen my calls and will call you back fast if your a serious person to buy. Thanks