Aside from being a bullpup and the clumsiness of trying to load two independent tube mags, what's wrong with it? I'm not expecting to storm a fortified position; I'm only expecting to use it for self-defense and I highly doubt I'd need to go through both mags in such a situation (if so then I'd probably be fucked either way) so reloading shouldn't be a problem. Bullpup is bullpup *shrug*. The other option is some form of semi-auto shotgun like a Saiga-12 that I can buy a drum mag for.

I'm not really interested in a rifle or pistol. Not really interested in something that can penetrate multiple walls and potentially end up in my neighbor's neighbor's wall. If I end up actually getting organized with a group then that'd change, but my modus operandi right now is to put my head down until I'm in a more secure environment; which means basically a shotgun because that seems like the ideal self-defense weapon for a home environment.