I throw myself to the mercy of you gear que- people.
I like the SOTech sling bags (A1, and go bag) but want to know if there are any alternatives I should consider as well before placing the order. Ideally, it'd be 25" to hold the AR pistol assembled, but it's not a necessary.

I plan to use it as a way to toss a rifle caliber into various cars quickly and discreetly and as one package to support it (mags, cleaning kit, spare batteries etc). So I can pull up, throw a backpack to "live" out of for a day or two in another car for surveillance and the rifle in a separate case. Need to access it ridiculously fast isn't needed, it'd be a support system.  

Any suggestions?

Hazard 4 Plan b, takedown or rocket? Takedown is kind of built for that.  Odin works gear ready, but at its price point is probably suspect.

I like the hazard 4 stuff quite a bit.

TT Enhanced Duffle?

LBT seems to be thinking about you too.

Thanks guys! I appreciate the help!

I've got two of these bags, sitting around unused.  I'm in AZ also, if you want to see one in person.   May work for your needs.

https://spotterup.com/grey-ghost-gear-deploys-rrs-transport-bag/

Interesting.