You mean assemble or build like from 80%? I've built 2 AK's and 4 AR's. One AR was just assembled the other 3 were 80% that I machined on my Bridgeport. 2 of the 80% were AR15's and one was an AR10. The AK's were built from builders flats.
Just built one a few months ago. Wasn't "cheap" by any means but I got top of the line parts for the price of an average ar15. Loved shopping for the parts and building the perfect gun. If u can afford it go with geissele trigger.