Would you use hot boiling water to clean your AR-15?

I would not use water to clean an AR-15.. I know it takes a while to clean when you use crappy surplus ammo, but I would not use water at all. I know ammo is expensive but, if you can buy better ammo. It is easier to clean and you won't have as many malfunctions with good ammo. There is some good surplus ammo out there that isn't as dirty