I'm not a fan of the FAL nano, 2 reasons, scarce ammo and no scope (at this stage)
An AKM in single shot mode will out shoot it, just takes 2 hits at 400+ meters - 7.62/39 was designed for average engagement range of 300m.
Here's an AKM range test I did - 1st shot misses, 2nd and 3rd hit.
[Watch On YouTube]