We can't. People have asked and tried.

[It's a mystery if he has tried that himself. Place your bets now.

Jean nods, reaching out a hand to Marco's chest. It starts glowing and he reaches inside. It doesn't take long and he pulls out the weapon he gets-

It's longer than he expects it to be, but eventually the whole weapon gets out (with orange tones).]

...

[It's not a weapon he's used before.]

Huh, I haven't seen a weapon like this before. Or at least, not so that I know much about it.