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
Yup, WDR4300 on OpenWRT is the way to go.
Had that running on my main router until a newer one came along. Now it’s still going strong, but as a wifi repeater.