Snarling as his shoulder joint was punched, Megatron snapped his hand backwards in reaction, flexing it to see that he still had a full connection from shoulder to fingers. He did.

"I'm sure it is, but I'm not talking about bragging for doing a samaritian's job, Prime. I'm--- rrgh--" Another growl, Optimus look was met with a tight, teeth-bared grin, the Prime's free hand grabbed and twisted away, slammed into the floor before Megatron let go and then angled his fist up, slamming it into the Prime's battlemask.

Of course, it was meant to take hits... But the area between the first and second set of knuckles on the former gladiator's hand, as well as those knuckles themselves, were reinforced and meant to hit well-protected or stubborn areas without taking too much damage.

"Talking about feeling self-righteous. Vindication's useful, too far however..."