Art Parts?

So i made this this really cool mix fusion M size Art, almost every of it's part has a powerful function such as missle, rockets etc. But the BS and the Head does not have any function so i was wondering if you guys could help me where can i get those BS and Head art that has an weapon function like rocket and etx. But i was wondering if that parts doesn't cost RT, only UC or Drops and i hope you guys can help me find that kind of BS and Head and How. Thx for reading  

About HD that can shoot...I can only think of Psycho Formula HD and Albatreos HD. But then, they're both RT...

There're some alternative for UC 'though. Namely Cacpitus HD, Sword Wing HD and Pterano HD, etc. They're lacking in power, and kinda have high cost.

About BS, there're some UC alternative like Build Arm BS. But it's not recommended. Lacking in everything...I guess. Also, costy.

Other weapon BS options are RT, so they're kinda hard to get...

You might want to check cosmiccalc to see the list of all available parts in CBEN.

M uc art can use Vulder HD, Snailbot HD, Cacpetus HD and Volcanics HD. I wouldn't really recommend them tho...

Vulder HD only works on Vulder

Just as well... I was just reading calc