I have the same issue and initially thought it was the head gear you mentioned but I tested with the other head gear like Navalized and Hex mesh and got the same bug. It might be a more of a weapon issue. It also happens with the SVK in my experience. Makes the weapons unusable. In my experience this started after the Dec 3 update. I'm in the USA on XBox One so maybe it is a basic cross platform issue. Thanks for making your post.
I went back and tested Angel with different head gear and uniforms/skins and narrowed the problem down to the LRIP skin/uniform. The LRIP headgear worked okay with other skins/uniforms. Others are posting about this on the forum.
