I'd argue it doesn't matter how new the parts are. You're going to get the same reliability and probably the same accuracy out of other, lower-priced AKs, as you do the Arsenal stamped versions. SAR1 + a folding stock + a trigger replacement = the same type of sights, same type of action, same caliber. So what's Arsenal giving me other than an overpriced bullet hose? I think an unconverted Saiga will shoot just as well for 1/2-1/3 the price of a stamped Arsenal.
The prices from Arsenal started skyrocketing before the dollar started falling. Does anyone remember when Impact Guns had stamped Arsenal AK74 clones at Impact Guns for < $500? I do. That was a deal. Today? Not so much. The quality hasn't improved from what I see and read.
I think the milled .223s Arsenal manufactured were some of the best AKs around. The lower recoil, stiffer barrel and thus less flex, plus availability of a greater selection of quality ammunition, all contributed to that gun being more consistent than any of the other AKs I've tried. I paid $650 + tax for the one I had, and that was new. THAT was a deal. A stamped, mass-produced AK is just that. In the end, I don't care if it's got a folding stock, pistol grip, or access to 20+ round magazines. I want to hit what I'm shooting at, and I don't want to break the bank doing it.
Besides the SAM5 I had, my $90 Mosin Nagant M91/30 consistently produced the same or better groups as any stamped, unscoped AK I've fired or seen fired, with lower cost ammunition, at greater range, and with the same reliability of operation.
I'll quit blathering now, but I won't be convinced that as of this post Arsenal is producing a product the justifies a premium price.
jm