I shoot corrosive through mine and I always clean with windex and hot water. The primers leave salts and those are easily cleaned with hot water and windex. If im low on windex ive used dawn dish soap to neutralize the salts aswell. Damn near anything can be used to clean an Ak. And I usually lube mine with ATF fluid.
Water works fine for any gun. After heavy shooting I clean all my guns with hot water and dawn. I have had some of my guns for over 30 years. None of them have required more than preventative maintenance. I used to use joy before dawn got to be so popular. So many weekends I have shot 800 rounds with a shotgun or 500 rounds with a 22. When you shoot that much just a brush and rag is not going to clean your gun effectively.
By the way, no I don't use a spray bottle. I get a bucket full of hot water and dish washing liquid to soak the gun in. Then I use a hose to rinse the gun off. When I am finished washing the gun I blow dry the parts. Then I lubricate and reassemble the gun. Every time my guns are so clean they can pass a white glove inspection.
I have avoided little nasties that a lot of people experience like the gas tube blowing out on an SKS. None of my revolvers have carriage problems. The only parts that I wear out are shell stops on pump shotguns.
Nothing in the affairs of men is worthy of great anxiety - Plato