The gosuke_weapon_mod_4_v131.7z file you have requested: Clear Sky / Mods / Weapons / Gosuke Weapon Mod 4 - 6.22mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
This mod modify a part of animation of weapons and adds new weapon "Sturm Ruger GP100" and "Mosin Nagant M1891/30" and adds new sprint motion to SVD, SVU and PKM.