TexasCHLforum.com

I have read documentation of exactly one instance in which a normally-operating handgun fired without the trigger being pulled. It was an M1991A1 (a 1911) which fired while cocked and locked.

A cop walked into an MRI room after a misunderstanding of where the radiologist told him to go, and those very strong magnets just yanked the gun, and pulled the firing pin block out of the way.

http://www.ajronline.org/doi/full/10.22 ... .5.1781092" onclick="window.open(this.href);return false;

So, keep your gun in good working order, holstered w/ the trigger covered, don't try to catch it if you drop it and stay away from ridiculously strong magnets, should be no troubles carrying with one in the pipe ;)