100% agreed on any battle-ready weapon. I'll be honest; my ARs are for 'pretty target shooting' so I'm a bit picky with what I feed them - brass only and stuff w/ no lacquer. Yes, I'm being snobby with the ARs, I guess (I like them to look good and run clean so the less crap I burn in them the better). On the opposite side, I feel silly putting 'good' ammo into an AK variant! I can't say I've ever worried about scrubbing lacquer and paint off the chamber with a serious wire brush. I don't think I'd feel bad using a dremel to clean a WASR, at this point.
I'm waiting for it to warm up (and today's only day 1 of winter!!!) so I can take the SHF Ultramag on that dedicated lower I bought last year to KCR and put a new scope on it that's sitting here for Christmas.