What if the device is some kind of magnet that attracts the bullets? That time stop device wouldn't be helpful? I don't have time now. Maybe later. He is still a skilled martial artist, however, and if he had some kind of vest that could deflect bullets or something to that effect, that would definitely help here. I'll try to dig up relevant episodes. I know at one point he had a superhero outfit, and that may or may not be useful to use, depending on what he had on the utility belt.