for those who want the correct iron sight:
1- go to open iv
2-go to mods/ update/ update.rpf/ dlc_patch / mpbusiness/ common/ data/ ai/ weaponspecialcarbine.meta
3-search for <FirstPersonScopeOffset and edit with <FirstPersonScopeOffset x="0.000000" y="0.0000" z="-0.0010" />
optional- if you want to edit the fov search for <FirstPersonScopeFov and edit it.
for those who want the correct iron sight:
1- go to open iv
2-go to mods/ update/ update.rpf/ dlc_patch / mpbusiness/ common/ data/ ai/ weaponspecialcarbine.meta
3-search for <FirstPersonScopeOffset and edit with <FirstPersonScopeOffset x="0.000000" y="0.0000" z="-0.0010" />
optional- if you want to edit the fov search for <FirstPersonScopeFov and edit it.