"It's a gun," Tony mutters under his breath at Steve, but whatever, let the weirdo think he has a 'mineral cutting tool'. If you aim it at a person like a gun and it can rip through someone with a single shot, then it's basically a gun.

Tony is standing up straighter the instant that counter-fired question is out of Isaac's mouth, glancing at Steve's very blatant attempt at a change of subject, then back to Isaac. Yes, right. Pleasantries.