I now have usable files for the Old West and WWI weapons at
http://wiki.rpg.net/index.php/GURPS_Weapons. There are still some issues with these files, but feedback would be appreciated, and problems brought to my attention will be fixed as quickly as possible. The files can be downloaded from
ftp://www.meanspc.com/~jeff_wilson63..._gdf_JeffW.zip and have not yet been updated based on HIGH TECH. The WWII and Modern firearms files are currently empty.