All the guns that use RU Red Dot and RU Red Dot G33 sights and lasers have completely mismatched laser sights. If you switch between aiming modes, the laser sight moves several degrees up or down. This seems to be because the character model physically aims the gun off the crosshair. Guns with holo sights (like all the AR variants) do not have this problem.
Affected models :
AK-12
AK-47
AK-47 Assault
AK-47 Shorty
AK-74
AK-74 Assault
AK-74 Assault Survival
805 Bren
A2
A2 Shorty
ACS12
SASG12
RU12SG
RU12SG Assault
There might be others but at a glance, these were all that I could find. This has been a problem for which seems to be at least a year.
Image of the problem:
https://i.imgur.com/DlUnkaB.jpeg