[Right. Of course only dummies make that mistake. Noone with a decade of training has ever done something so incredibly stupid.]

Everything looks about fine, I don't know what could- oh, who the hell did this?

[She takes out a small, pointed part and puts it to the side.]

The firing pin for this is way too large- it's hard to tell looking at the individual pieces, but there's not enough room on in gun for it to even move. Even if you had managed to pull the trigger, the thing wouldn't budge.