Additional weapons, downloadable for the original Return to Castle Wolfenstein game — extracted from The Dark Army: Uprising — originally made by Alexandre.
Unavailable in multi-player
This add-on is not compatible with the multi-player game mode.
Can be un-installed at any time
You can un-install this add-on at any time — deleting/moving the .PK3 file allows you to simply uninstall it. Note that the zipped archive doesn't provide any un-install program — the best way to not pollute the Windows registry. That's why you have to manually un-install deleting the file in question.