I own several AKs in 7.62x39- imports, psa, even a nice old Norinco.   Familiar and happy with that platform.  Been wanting to branch out to a smaller cartridge.   545 seems dry and expensive.  So I’m looking at 5.56 and PSA is fine with me.

Parameters:
1- don’t care if it uses AR mags. I don’t own any ARs. Never been a fan.
2- rifle length or pinned and welded.
3- would like to spend 7000-1200 range.

Couple questions:

1- are the kinks worked out of the 100s?  Which 100 to go with?
2- standard AK furniture and such workable on it?
3- what accuracy are owners seeing?
4- reliability?

Appreciate any responses.

My 102 has been fine, but the 101 I bought had to go back twice to get it running right (turned out to be a rough chamber).  Honestly, I'd look at a WBP 556 Jack if this was going to be your only 556 AK.

Ended up ordering a 102 p/w

I bought the 102 p/w rifle from PSA a few months back and have ran about 500-600 rounds through it. It has never had any issues and is surprisingly accurate with the 12.5" barrel and krink break. It's a pretty soft shooter, no much recoil at all. I've never shoot steel cased ammo through it, all it gets is PMC brass 55gr. Congrats on your new rifle, you made a good choice!

Thanks.  Looking at stocking a few spare parts.  Is a WBP bolt going to fit, or another manufacturer?

When it comes to AKs there is no drop in bolt. A new bolt will require headspacing.

Is that specific to a 556 PSA, or all AKs?  I’ve dropped milsurp bolts into my 762x39 polish, Romanian, Chinese, and Bulgarians AKS many times before, and in parts box builds.

Are you talking carrier or the actual bolt itself? I do not recommend just dropping in random bolts.