Would have done this long long ago, but if you take the ushanka off, there is a huge hole in the model
However his original Raid WWII model does not have this issue
So ripped his Raid WWII playermodel and repositioned and scaled it to match his PD2 mask.

Please note you can't apply patterns properly (materials are ok) cause modeltool doesn't like modified mask models :'(
Hopefully that isn't a dealbreaker for you, cause tbh patterns applied very poorly to the original model anyway, and imo it looks better without any customisation