Over the years the “Frankenstein” AR-15 has gotten out of control. A few years back, I was accessorizing my stock “Bushmaster AR” with all of the latest gadgets and widgets. In my mind I came up with all sorts of wild apocalyptic scenarios where I would need such things for my rifle.
To survive in the urban environment you will need to learn and use and whole new set of skills and tools than you might ordinarily consider in other survival situations. Urban survival techniques and objectives are completely different from the survival skills you would use in the wilderness.