I built 1 when parts kits were $100 , spent another $100 on U.S. made parts to make it 922r compliant. I used a Tapco flat and made my own bending jig , you'll need a 10-12 ton press or make your own barrel press tool, and a rivet tool ( unless you use screws) . Today I would probably just buy a complete AK unless you get a great deal on a kit , current kits are around $300 , I still see new wasr's around $450. Learned alot though