I figured out how to make the Spec Ops Helmet appear naturally in both Germany and Russia maps, although after doing some investigation into .dat files in "Unturned/Bundles/Spawns/Items" folder with some help from Bash's "grep" command:
grep -R --include "*.dat" "[^0-z]1525" .
Since it only appears in Washington and PEI spawn files so far, I had to use the Spec Ops Vest's ID to search for other spawn files.
The file to be edited turned out to be "Special_Low_Clothes.dat" which includes every Spec Ops clothing except the helmet and is referred to by four separate spawn pathways, two for each map.
The instructions are as follows.
- Open the "Special_Low_Clothes.dat" file with any text editor.
- Change the "Tables" value from 5 to 6.
- Add "Table_5_Asset_ID 1525" and "Table_5_Weight 10" in new lines below all previous ones.
- Save file and play.