Hy Ryan, I found these cool Gungnir helmets over at the 3DWarehouse, as I could not find my original ported file. I couldnt say if they are accurate or not or even if the sizing is correct. But they may be of some use towards your project ; ) Cheers Jace
https://3dwarehouse.sketchup.com/model/98d05c9e046226468d23b8b99c98bb6e/Project-GUNGNIR-complete
The author marked this model as their own original creation. Imported from Thingiverse.