The outserts can be easily attached to the mask and removed.
Rings made 3D printer.Material is ABS.
Outsers lens is 3mm thick and made of polycarbonate.So very strong.
Polycarbonate is 50 times tougher than acrylic glass.
We have confirmed that the lens does not break when shooting at close range with an airsoft.
The power limit for Japanese airsoft is 0.98 Joules.
However, regulations on the power of airsoft differ in each country.
Therefore, please avoid hitting the lens at close range.
You can check all the gas mask lenses etc. that I sell on the next product page.
https://www.ebay.com/itm/295827376199
If you purchase multiple items, you will receive a great discount on shipping costs.