I'm looking for a lightweight relatively inexpensive .223 semi-auto I can strap to my bugout backpack. It will serve as a self-defense/hunting rifle. I've listed the ones I'm interested in (particularly the SU16C with it's folding stock). The weight issue is most important as I may be packing this puppy for long distances and I want everyone in my family to be able to heft the rifle and fire it comfortably should the need arise. I'm open to other suggestions as well. Thanks!