Crosshair codes of 4 AWPers: sh1ro, m0NESY, ZywOo, s1mple. When scoped the game draws its own reticle, so snipers keep the same small static cross as riflers — it is there for no-scopes and the pistol.
A small static cross or a dot: unscoped, the AWP fires where the normal crosshair points, and a dot does not cover the silhouette at range. Scope line width is set by cl_crosshair_sniper_width.
Do I need a separate crosshair for AWP?
Not necessarily: the AWPers in the database play a single crosshair. If you want one, put a second code on a key: bind F6 "apply_crosshair_code CSGO-…" — and switch mid-match.