I started to print some of my helmets and have a small shop now:) Its called raidmask.com
As first I made this small half face mask, but I will print more masks and helmets soon. Masks are in raw format and requires a little bit sanding and can be painted afterwards. Also all insets are separate and can be colored in different metallic colors like on 3d preview. This mask is available here and it only one at the moment : https://raidmask.com/product/half-face-mask/