Usually C:\Program Files (x86)\Steam\steamapps\common\Half-Life\cstrike . Find the Models folder: Open the models folder.
In the world of CS 1.6, using custom models is generally safe on most public servers. However, there are : CS 1.6 Skin Changer and View Model Changer
The are the best ways to breathe new life into a legendary shooter. By modernizing the visuals and optimizing your screen space, you get a premium experience without losing the "old school" feel that makes 1.6 special. CS 1.6 Skin Changer and View Model Changer