So, I'd like to buy a lightweight carbine of some type for a family member who is stricken with fibromyalgia, thus weak and sensitive to pain. My 14.5" AR15 is too heavy. A 12ga shotgun is a good weight, but if fired can arguably be as dangerous for her health as the attacker due to recoil (ok, hyperbole, but you get the point). A .22 is a good weight and low recoil, but the reliability of such is seriously in question. So, I guess what I'm looking for is the carbine version of Claude Werner's "Old Man Gun."
What the weapon does not need to do:
Run hard through a carbine course
Last tens of thousands of rounds before major component replacement
Have better than 4 MOA accuracy
Something that is 223, or even 9mm, would be preferable at ~5lbs. I do not have the money to build an expensive custom AR15, ala Rob Jensen's awesome "Featherweight" rifle for his wife, if you are familiar with such. Looking at a grand tops on price.
What I'm looking at right now is the Kel-Tec Sub-2000, the Kel-Tec SU16, or a franken-AR using a Cav Arms polymer lower and ~.55" turned barrel....the advantage with the AR15 is that components could be upgraded to higher quality or lighter weight items as time goes on.
None of these are what we around here would consider to be optimum for our needs or wants, but I'm not looking for a fighting-grade AR for duty or expecting these to perform as such, either. I'm wondering if any of you have experience with them and can comment on their use in the context I've provided. Also, if you have experience with some other carbine that might fit this "mission," I'd love to hear. For instance, I looked around at alternative options, such as a pump-action rifle, but found their weight at 7.5lbs to be more than what I'm shooting for. I realize that 9mm carbines are somewhat a thing of the past, so if you have experience with one I haven't mentioned also bring that up.
And, of course, if any of you have a similar mission for an ultra-light backpacking semi-auto/repeating rifle or some similar concept, I think that would be interesting to hear about.