These files are provided as reference materials. Check your local laws and regulations before building anything contained in the files. Again, I am NOT responsible for any consequences you incur by using these files.
Lower receiver sketchup file was created by me from this particular sample, an inch pattern L1A1 lower receiver:
Upper receiver was found elsewhere.
I cannot guarantee that the dimensions will fit your FAL.
Upper Receiver: fal-upper-inch.pdf