In this Gauss gun model only the texture has been changed. It looks a bit strange, but not bad. FPS is the same as with the standard model.
Installation:
Copy the contents of the archive into the valve folder of your game and agree to replace the files. If there's a valve_russian folder besides valve, copy them there too.
Read more here on how to install Half-Life models
The model was made by Pein and Domen!cK at the request of AurorA and MrVenom
Download: