Another note on the glock, you have to pull the trigger to pull it apart.

All the more reason you follow the 4 rules of gun safety to a T with that brand. Especially the part about ensuring its not pointed anywhere it shouldn't be and unloaded check about a million times. (note, I own no firearms but have enough friends that do I gain a ton of knowledge on them.)

One exception to firearms going off on their own might be a misfire after trigger pull. That means you have a possibly live round in the chamber that could go off at any time. Need to be really careful on that one.