Yes the whips the pipe and gauge that connects air bottle to gun sorry wasn't so clear you also want a 300 bar bottle. I suggested half way sized bottle as it's not to big if you do need to sling it in your boot etc and not to small you have to fart about getting it filled all the time.
With regards to scopes your best bet is to look through one, no point buying a scope off paper if you can't see the ret, as the post above proves.