They are both considered non-firearms and would fall under "air rifles"
No
No way! you could get arrested your self because he could press charges and by the way I have a 750 fps airsoft gun there are no laws on an airsoft gun fps
No.
Yes they are the same unless you are talking about a real gun.
In a BB gun (Not airsoft) this is considered very slow.
An Airsoft gun
The same as every other paintball gun, louder then an airsoft gun, softer then a pellet gun.
For what I know airsoft is not "illegal" anywhere. Because airsoft guns are considered toys by the government, as long as you have the orange tip on your gun and your being careful of who you aim at then yes, you can play airsoft in StLouis.
A pump airsoft gun is a gun that has to be pumped every time before shooting. Ex. Airsoft shotgun
No
No
It is an airsoft gun based of the PPSH-41 gun