Iron Sights Not Alligned Until First Shot

[SvveetMavis]

Version is the lastest master from github

### Describe the bug (mandatory)

The Iron sights of guns are misaligned until a shot is fired, and then it becomes normal

### Steps to Reproduce

Turn off "Lower weapon when using ironsights"
Find a Gun with properly aligned iron sights
Scope In
Shoot
Observe how after firing the alignment changes

### Expected behaviour

The Iron sights are aligned without having to fire a first shot

Before shooting

After shooting

some guns are more exaggerated than other, I picked the an m16 that has been modified to have better iron sights

[TimGoll]

It might be due to changes in this PR: #1265