Big +1 to CalRon and Adventurer_96.
TheAkforum.net has a very vibrant user base and is probably the best place to get kits with or sans barrel. If you get one without a barrel, the build will be significantly more involved just because of gas port issues (may require some drilling). BlueJack (not to be confused with RedJacket) makes some great barrels, although I'm not sure if they've ever done anything with chrome lining. Copes Distributing has AMAZING deals now and then and also great customer service.
Ak-builder.com also has great build tools/kits.
Building an AK is definitely more involved than an AR. But if you are comfortable with rivets and a dremel and have access to some headspace gauges, it is not that hard of a build and there are plenty of videos available to guide you. The AK is not a precision weapon. It is a simple, reliable, hard-to-fuck-up weapon that can hit minute-of-man at 300m after 10k rounds through the barrel, decades of abuse and disuse, and an even coat of rust instead of cerakote.
Just a few notes:
stay away from screw builds.
Stay away from receivers marked as 'Hesse' or 'Vulcan' -- they were improperly heat treated and rivets have a way of 'walking' after only ~1k rounds.
NoDak Spud is a great source for new receivers as is 74ullc.
BE SURE that whatever you build is 922r compliant. If you don't know what that federal law is, look it up before attempting anything.