UAG Client Components,
these are available on the UAG server under C:\Program Files\Microsoft Forefront Unified Access Gateway\von\PortalHomePage
Several files are available under this location for each component or you can just take the WhlClientSetup-all.msi from this location and have your users install it manually (Of course they
need to have admin rights on their computer).
For more details please check the below article
http://itcalls.blogspot.com.eg/2012/01/manual-install-of-uag-2010remote-app.html