The stalker_cop_aiming_sway.zip file you have requested: Call of Pripyat / Mods / Aiming Sway - 1.42kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Call of Pripyat and upload any files you want to share or are missing. This is the only information we could locate:
Just adds a sway effect when aiming.This effect should be on default in a realistic game like STALKER, but is not.