1:

CZ82 has no visible magazine while reloading
2: CZ52's magazine won't come out while reloading.
3: M60's rate of fire is too fast
4: Both FALs use three round burst instead of full-auto, and their fire selectors are not animated while switching mode.
5: FALs' recoil is too low compare to other guns
6: M16 carbine's rate of fire is too low and recoil is too high.
7: VZ58's animation is not synced with hand, better just use vanilla AK animation
8: Hunting rifle's scope is non-detachable