With the rifle's value and ammo cost, it is hard to really go wrong, for an iron sight rifle. The ammo could soon drop back to about .20/rd. for Russian-made 7.62x39.
Only the Yugo (corrosive) or 5.45x39 is cheaper center-fire rifle ammo.
The only component I've ever added to a gun (all are milsurps) was the fully-adjustable Tech Sight.
The really improved accuracy makes me regret that was not done much sooner.