What do you want it for? I've heard they're fun and cheap to shoot, but you can easily put an eye out, so it's important to understand what you think you're going to be doing with it.
Deff a sniper rifle
Yes. You can get replacement springs for airsoft sniper rifles.
I wouldn't
Airsoft GI www.airsoftgi.com
No.
you will never go wrong if you buy the best you can afford
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.
UTG Shadow ops airsoft sniper rifle (L96 Type 96)
Yes of course
go for the m14, unless its cheap looking.
A paintball sniper rifle can shoot father.
I asked this and the links just below the question are the ones you should be looking at. Thanks!