A signal jammer? Well, that made sense and it definitely wasn't out of the realm of possibility for Tony to create, even if this technology was supposed to be advanced. He probably could dissect the arm and understand it completely if he was given enough time. And Steve didn't think it was a completely bad idea, but only if it didn't cause Bucky a lot of pain.

"I'll take the hit for him."

Steve wasn't sure if Tony would allow it, but he might as well toss that in. He would take the blow for his friend, he wanted to in fact. He was ready to give reasons why he should be punched in the face instead if it came down to it.