#1 Get an idea of what is involved and the costs

#2 Check out the Parts Kits available

#3 Learn the AK47 building methods, choose one, and gather the tools needed

#4 Buy an AK47 Parts Kit, Receiver, Trigger Parts, Rivets and sometimes a barrel

#5 Walk through the steps, to ensure you have gathered all the tools and parts needed

Then BUILD One !!