That's because you're not one of the AR-15.com "warrior caste"... a hardy bunch of nimrods, most of whom really have no clue what to do with their properly set-up "Tier One" rifles/carbines, but they can parrot the latest cogniscenti-speak verbatim.
I have a pre-Cerebus Bushie, just like yours (Patrolman's Carbine). When new, it had extraction issues, but an O-ring fixed that. It has been through several classes of 3-400 rounds + per day, and has never puked since that initial time, in well over 5K rounds by now. Most of the clowns I mentioned earlier insist that one must have the latest/greatest iterations of whatever. If I was going to war, I'd agree. I'm not, and I suspect you're not either. Although I've heard a few grumbles regarding post-Cerebus QC issues, IMO Bushmasters are just fine; both for entry-level users and experienced guys who don't want to pay through the nose for designer guns that, true enough, are top shelf. But all you really need is a dependable carbine/rifle.
I have a couple of Colts laid back for The Revolution, but the Bushie is with me every day.
To answer your question... I have a small Fatboy that I keep in the vehicle, with extra HK45C magazines (three 8 rounders, one elephant foot), and the other assorted stuff you mentioned. SureFire A2 and Inova X5 for light, Spyderco Military, extra batteries, extra spectacles, minor first aid, etc. A larger "war bag" back pack holds more of the same, along with a water bladder.
Personally, I'm all about "bugging in". Having witnessed, first hand, the utter chaos and pandemonium that the roads are in any emergency, the best place to be is NOT on them. However, I understand that in a few scenarios I may have no choice; but the stuff I carry is mainly to get me back to my house, should I be caught in town, etc., when the flag goes up.
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