Good evening All....quick question around the AK 103 barrel assembly (furniture ready variety).  

Linky here.....https://palmettostatearmory.com/ak-103-barrel-assembly-furniture-ready.html

I have assembled a number of AR platform rifles in my years and have been considering acquiring an AK barreled upper.  Prior to purchasing I was reviewing the review comments, from what we assumed are previous purchasers.  I notice that one of the comments says that the bolt group did not arrive with a firing pin, extractor, spring and retainers.  Is this indeed the case?  I have picked up some furniture and a complete ALG trigger set.  Do I need to purchase the firing pin, extractor, spring and retainers?  

Your assistance would be much appreciated.

Thanks in advance.....

The carier should be complete. You'll need a trigger assembly. PSA has a one for like 40$. Need HG set, standard akm.

Thanks BigBore...much appreciated.