This is not a conversation about guns. This is a conversation about items that have withstood abuse that are near unbreakable.
Some items I have heard referenced as AK47 of:
Gerber MP600: It’s a multi tool
Old Thinkpad Laptops
Mag lights
Toyota Hilux
Shure SM58/57
SM57s still can get roughed up pretty bad with the plastic covering on the front of the mic (especially if miking a snare drum with a less than precise drummer). SM58 will survive a nuclear war.