IF he did indeed get it a long time ago, and it’s actually a Long Branch C1/C1A1, it’s in that Holy Grail category. The front sight/gas block is a dead giveaway. Rear sight is a dial, but interchangeable with other FAL lowers. Forearm doesn’t have vent slots. Someone made C1 pattern gas blocks a while back but has since died, and even those are extremely rare. The “made in Canada” digital electro marked FALs are a far cry from actual C1s, but I don’t think are any older than about 15 years.
Get pics!