Garry's Mod Special Effects?

How do they do the bullet effect seen at 5:19

Also, the citadel explosion is from Ep1 but where did they get that?
Thanks

No one is able to help me? I’m starting to think it was done using a video editing program…

Yeah, it is (i think) Kitty0706 has the exact kind of thing in one of his, let me dig around my old gmod files or the internet i’ll let you know the outcome through PM :smiley: