Yes, you can paint an air soft revolver, you just have to take it apart and paint only the casing, should you get paint on any of the gun's internals it will either work badly or fail altogether.
Do not paint the tip of the barrel any color other than the orange it came in, it is the univrsal symbol that it is a toy, not a real gun.
If it looks like a real gun, police will shoot you.
Aside from that go for it man,
Peace
Air Soft has a wide range of prices so yes it can be expensive or inexpensive
Not normally. BB are 177 cal, air soft is 6mm
Because it hasn't fully 'cured' yet.
Yes, you can put chalk pastels over acrylic paint. After acrylic paint is dry, you can use soft pastels over the paint so it won't crack.
They are mostly air.
use a heat gun and a soft plastic scraper and keep the heat gun moving so you dont wreck the paint
No, not if it's designed to do so.
Try Avon Skin So Soft. Works on most paint and actually helps your skin
Pie plate size or so
It fills them with a soft cushion so driving will be smoother.
so when they go on walks there like shoes for them, and they are filled with air so its soft when they walk.
Less than 100 to 500 or so