"I live in a state where things can go sideways pretty quickly"
Too late; you're already forbidden from possessing proper defensive arms, so now it's just a question of how much compromise in utility. To a certain extent, we're all in that boat (34 NFA) and are forced to choose between large rifles and small pistols. Otherwise, select-fire suppressed PDWs would be the gold-standard for home/hearth defense arms, backed up by the rifles/shotguns we still have ready access to.
In CA, I'd almost be leaning towards a nice SKS in some respects, but only if there is such a thing as a quality
and lightweight stock made for them. Cut down the weight a bit, and you have a solid platform that is simultaneously well-sealed against the elements and extremely accessible in terms of cleaning and clearing. Heck, I'd suggest the VZ58 again as a more-modern SKS substitute, and the 5.56NATO CA variant from Czechpoint as
the modern SKS substitute. With a properly-designed semi-auto conversion (i.e. not an older Century offering) there's simply very little to go wrong in those guns*, and if it does, it's a lot easier to address than an AR or AK with their tiny ejection ports. Both AK and AR will require frequent disassembly to brush sand from nooks and crannies; the open-top SKS/VZ layout is actually easier to clean particulates from in that way. It's "AK" dust cover is also retained by push pins, so service of the hidden parts is no worse than an AR (and less liable to blow off than an AK cover
)
TCB
*at least as little as an AK or FAL
Me: "No gun anywhere is driven entirely back under gas pressure; the case would rupture upon unlocking"
Briansmithwins: "That's exactly how blowback operated firearms work."
Name of the thread is "best gas system," implying something more complicated than the beautiful simplicity that is blowback (and to a lesser extent delayed blowback or recoil operation). IMO, recoil operation is for applications where the guns' cycle is too violent to be tolerated for the desired weapon weight (so 'small' service pistols, or really big anti-materiel rifles), and gas operated for everything else that isn't low powered enough to be blowback.
My comment was addressed to the folks out there who claim the AK is a 'short stroke' because the piston is not driven by gas pressure its full length of travel. I argue that
no piston gun of any kind is, since the whole purpose of the exercise is to prevent the unlocked bolt from ever seeing pressure, which it will if the operating piston is under load throughout its whole travel. That's not even getting into how much juice would be imparted to a bolt/carrier of any type were it truly driven back for such a long distance under pressure (think projectile level energies
)