All of the guns are op. You spawn with something that endlessly sprays bullets and can kill someone in a second if most of the shots hit. I've literally held down the smg's trigger and gotten 6 streak kills before :P just by holding the smg trigger and not letting go for anything.
I like op guns, they're fun. Everyone spawns with op guns and everyone can find the same op guns. I like it that way and it was an intentional design choice. I know it's not for everyone, though, so if you really do hate it, feel free to change it. That's why I released the game mode. But I played this for hours on my server before I packaged it and I personally thought it was perfect.