Use prop.static
For instalation - copy both folders in to CS GO folder.
Steamapps/common/Counter strike global offensive/csgo
If need some small model you can try write me.
[email protected]
or find me on Facebook / Pavel Turzo
This models did someone else .I only recompiled them for source.
Source https://www.assetstore.unity3d.com/en/#!/content/6947