No it depends, you need to check the rail size of your rifle, then the sort of rail that the scope can attach to. These are some standard airsoft scopes, check your gun rail size first though!
There really is no answer to that question, because it is based on opinion and personal preference. An airsoft sniper rifle and an airsoft aeg are two different things, and since aegs can be full or semi auto, and sniper rifle are only bolt action or spring, there really is no comparison. Sniper rifles are more powerful, but aegs have a much higher rate of fire. It all depends on what you want to use and what you like better.
Yes, an M14 Airsoft Sniper is good. My cousin has almost all of the airsoft guns their are and he loves the M14. I would recommend it.
No
A person can buy airsoft rifles from an airsoft store, gun store, and a sport store. They are all reflective cheap in every store depending on the model you wish to buy.
You Have To Complete ALL the sniper marksman challenges with all the sniper rifles to unlock the gold Dragunov.
Weapons of all types including sniper rifles can be found in chests, lockers, sometimes in skag piles and quite often dropped by enemies as you kill them, there are lots of sniper rifles to be found, so get looking and you can buy them
There is an on-line retail store in Michigan in the St Joe and Benton Harbor area. They carry airsoft rifles, airsoft pistols and airsoft shotguns. They also have a section dedicated to airsoft sniper rifles as well as a multitude of airsoft pistols. They carry brand names such as Classic Army, ICS, TSD, Jing Gong, and carry 6mm bb 's for all your shooting needs. They have a good selection of low priced but good quality airsoft guns, all the way to higher end guns such as Classic Army and Tokyo Marui. They also have tactical items like tactical knives, tactical vests and airsoft goggles to name a few. Hopefully this will help in your search for a quality airsoft retail store.
No they don't. If you know what your doing then buy a different sniper spring or get a professional to do it for you. But it has to be a spring from another sniper not just from an other AEG. But remember not all Sniper springs will fit so beware of that. To find out which ones fit and which ones don't go into a Airsoft shop and they will do it for you.
Library, internet forums, internet searches
it all depends on what role you play so you need to tell people what role you play (i.e. how do you be a good airsoft sniper)
Mainly the US and it's allies, but all sides have used sniper rifles.
Yes they can, in fact almost all sniper rifles can. Just ask any vet.