Every sniper rifle that isn't the C-Tac needs a buff to make them equally as viable as it. As of now it is unapologetically the best rifle for sniping, while all the others sit in the dirt with nothing to make them stand out.

The AWP is most in need of a buff. Giving it a far faster bullet travel speed, reduced tracer visibility, and less bullet drop would make it the perfect tool for new Recons to learn the ropes of their class, as well as a headshot machine for the more skilled players.

The Barrett needs a buff as well to set it apart from the C-Tac. Right now they practically do the same thing, but the C-Tac can oneshot torsos while the Barrett can't. If the Barrett was given the ability to slightly damage vehicles by maybe 3-5% per shot, that would give it enough of a niche to set it apart.

The Dragunov is mostly fine, but could use some tuning up. Giving it reduced tracer visibility like mentioned with the AWP above would allow it to more efficiently act as a mid-range weapon, now without alerting the entire enemy team to your location with giant white tracer beams.

Example of what the less visible tracers could look like:
https://m.youtube.com/watch?v=q4YEvFgKrsg&pp=ygUSYnVsbGV0IHZhcG9yIHRyYWls0gcJCZkLAYcqIYzv