One of my colleagues does fMRI studies, and she has so many great stories. None with guns, but those magnets are so powerful that a gun would be big problem!Heh. Reminds me of a story I once read. Guy was carrying a 1911, and the MRI magnet did, in fact, pull it out of the holster and cause it to discharge. It sounds like a fantastic tale, one meant to cover up a negligent discharge, but the evidence supported no other conclusion: there was a discharge, but the spent casing was left in the chamber. The safety (which, for those not familiar with the 1911, prevents the slide from moving) was found to still be engaged, so the only explanation was the gun had struck (something) muzzle-first, causing the (inertial) firing pin to move forward and strike the primer; the round fired, but because the safety blocked any motion of the slide, the spent casing was not extracted and no new round chambered.