The owning and operation of a paintball marker does not require any permits.
You would need zoning permits and insurance to open a paintball field.
No there is no licence required to purchase/operate a paintball marker. In order to play you must be at least ten (at most places) and 18 to purchase a marker, balls, or CO2.
no. only if the title of your paintball marker says "electra"
This is totally an opinion question. A mechanical marker is nice because there is no need for batterys and it is truly a bit of paintball history. Electronic markers are great because they are faster, allow more modes, and are the future of paintball.
Yes. you may need a neck adapter though.
On a paintball gun C02, or High pressure air is necessary. It is compressed air that, when the trigger is pulled and the marker fires, propels the paintball out of the barrel.
Yes. unless you use HPA.
No. You need an offset rail or the sight will be blocked by the hopper.
Usually LPR's are used to save on gas usage and if your paintball marker can work with lower pressures (otherwise you may end up with an effect that is similar to "passing gas" where the gas just leaks out of your marker upon actuating the bolt - if your paintball marker requires your air tank to be using a higher pressure)
I dont think you need a permit but I believe you need to be over 16 to purchase one and should be 12+ to use one.
You don't need a license to carry a paintball gun in the United States. To purchase a marker you must be 18 , to play at a field, insurance requires that you be ten, but can sign a wavier for yourself at 18.
A mask, marker, full air tank, and paint first of all. If you need to rent bring around 60 to 80 dollars for entrance and paint. If you don't have any of the items above you can rent them.