So far, all of the WST's with weapons are:

 

Optimus Prime

Ultra Magnus

Hot Rodimus

Megatron

Starscream

Thundercracker

Skywarp

Thrust

Soundwave

 

Now, Prowl and Bluestreak could easily have rifles as well as wrap-around rocket launchers, and Jazz could also have a rifle, and Sideswipe & Red alert could have shoulder clip on rocket launchers. There was a guy who did some custom WST weapons, but a group of people in the fandom were critical enough that he is no longer attempting to make these for us....

Now, Prowl and Bluestreak could easily have rifles as well as wrap-around rocket launchers, and Jazz could also have a rifle, and Sideswipe & Red alert could have shoulder clip on rocket launchers. There was a guy who did some custom WST weapons, but a group of people in the fandom were critical enough that he is no longer attempting to make these for us....

I saw those weapons he made. Pretty cool. He actually tried to sell his WST series 1 & 2 set w/the custom weapons on ebay. Not sure if anyone bought it though. Jarrod also made some custom weapons. He also made custom Dirge and Ramjet. Looked pretty damn sweet. I'm going to attempt making those 2 myself since I have so many extra Thrusts.