4MOA is loose, from my (admittedly limited) experience. My STG-58 from DSA is sub 3MOA. However, there are a couple of things that can influence this:
1. Inherent mechanical accuracy of the gun. Unless you're really carefully resting the gun and being very very diligent with your shooting, you're measuring this along with shooter induced error (which is influenced heavily by #2 below).
2. less-than-ideal sights. The FAL's weakness is its iron sights. They're better than the AK's, but they're sure not superb. There are, however, options for improving them. I know one guy whose gun magically improved from a "5MOA POS" to a 3 MOA gun with the simple addition of a scope.
3. Ammo. Try a few batches of different ammo, and pick the one it likes. Mine likes Hirtenburger (of course. It could not like CAVIM- that would be too easy.).
Most of the FALs I've seen have been about 2-3 MOA guns. That's certainly good enough for combat use, and in
general better than most AKs. You can tweak them to make them shoot tighter, but you'd have a hard time making one into a match gun. That's just not what they're built to do. But you should be able to get better than 4MOA.
Mike
