You missed the railguns, the assault shotguns and the more sophisticated stuff like antimatter guns, meson guns etc. Well, assuming that the setting of mentioned pen&paper RPG is futuristic enough to let the weapons mentioned happen, technology-wise. xD
Thanks! Indeed, I also like keeping some inspiration from real life weapons for original designs. I think it can really help people imagining how they would operate and feel, and make them more believable.
So I have been recently falling in love with your other works, and it so happens I am working on a similar project like this. I've since looked for other works like this by other artists, but none of them look as good as this one does. Would you be willing to do a commission for something similar, and how much would you charge?