Hey mate, didn't immediately recognise your username so thought you were a noob, shock horror when I checked your profile & see your more akin to a Chelsea pensioner in forum years lol?.
Jokes aside, getting in to sniping is a big step, your mindset & fieldcraft is just as important as your gun, maybe more so.
Whats been your playing style up to now, & types of gun you favour ?, I ask as when players have previously mentioned getting in to the sniper role, I'll usually recommend trying a hybrid role first, think a single shot dmr role using their longest most accurate gun & focusing on the fieldcraft (& patience) aspects, no point in shelling out good money on a rifle & possible upgrades if after 5 minutes of concealment or crawling, you want to run towards the firefights.