Thanks to fashion you can choose the desired weapon very quickly.
In addition, you can choose a weapon while using the jetpack.
How to use:
Hit - (Numpad) or F6 to display the table of weapons. This can be changed in sfweap.ini.
Left-click (click with the left mouse button) to select the weapon you want.
You can remove all weapons, or can remove a weapon from a certain slot.
You can change other settings in sfweap.ini.