There are some settings there that could be checked in the setup.ini file, to see what is turned on.
Make it look like this in the code link below.
[GAMERUN]
realgameview=0
dynamiclighting=1
dynamicshadows=0
useeffects=1
useeffectsonguns=1
useeffectsonscene=1
useeffectsonentities=1
dividetexturesize=0
controllerhint=0
vrmode=0
vrmodemag=100
mousesensitivity=100
producelogfiles=0
hsrmode=2
optimizemode=1
aspectratio=0
newblossershaders=1
postprocessing=1
showaioutlines=0
airadius=20
disablepeeking=0
disableparticles=0
Also Where do these weapons come from. In there gunspec file there is a place for an effect. Also In the weapon Pick Up when you view the properties in the map editor, what effect does it say it is using.
Giving us this info will help out. I see you are using version 119.
But first try closing FPSC, Open the setup.ini file in Notepad.exe and check the status of it, change as needed if effects are not on. Just for a sanity check.
Hope this helps.