yes it does
Not worth it. You may damage your gun
no, but it will damage the battery.
In general, no. This is what they were designed to do.
most electric airsoft guns don't shoot metal bbs. the metal airsoft bbs are designed to be used in sniper rifles not machine guns Yes.. kind of pointless unless you have like a 700fps monster though. Not wise but very doable. Assuming its 6 or 8 mm, depending on your aeg caliber.
Some of the high end airsoft guns can shoot upwards of 400 feet per second. they are certainly capable of doing serious damage if not killing a small animal
Yes, I think it can damage candles (do not relay on me).
Yes.
I've been told yes but you have to become a pro and only get paid if you win
Yes. If it's an airsoft it will sting. If its a BB gun or pellet gun it can penetrate the skin and do damage to a person.
No. In the US you must be 18 to purchace airsoft or paintball equipment, and 14 to play wit an adults permission. 11 is too young and will likley end in injury or damage of property.
Airsoft guns are not waterproof. If you have one that is electric it will stop working if it gets to wet. If you have a manual one and it gets wet, it should still work.
No. Electric attacks make regular damage to Ice.