I picked up a FAL 80% for $20 at the local funshow today. It is made by century and marked R1a1 sporter.
1) HAs anyone build a kt on an 80%?
2) How har id it and how much milling is required?
3) Is it possible to use an inch blank for a metric build?
4) Will I need to heat treat?
5) Are there bluprints for a semi FAL reciver on the net?