His body was wrapped in a cocoon made of spider-webs, in a fashion similar to when Spider-Man had died after facing.
The sturdy metalloid bodies of the robotic assassins were cut sharply in half as Katarina's daggers tore through their outer exteriors with startling ease.
Without this safety net, Peter felt that he couldn't risk jumping into gunfire on his own--so he created this suit of Spider-Armor.