Skull Grenade Pack.
Model and Audio.
First make a backup of the files:
cstrike/models :
v_flashbang.mdl
w_flashbang.mdl
p_flashbang.mdl
=============
v_hegrenade.mdl
w_hegrenade.mdl
p_hegrenade.mdl
=============
v_smokegrenade.mdl
w_smokegrenade.mdl
p_smokegrenade.mdl
==================
csstrike/sound/weapons :
hegrenade-1
hegrenade-2
================
After you extract the folders :
sound
model
In "cstrike"