You can get a portable version, yes, it doesn't have to be build in your arm but it's more practical that way. Since I won't be using it, I cloud always lend you the Resonance Blaster.

I found it here time ago, it 's not as powerful as the one I used when i was in my universe but it will help you if you have to fight someone or something.

[Nahh, it's cool. Knock Out knows not everyone's into upgrades. Unlike the crazy Ratchet, he respects that.]