MRC Helmet Replacement Face Shields - Dark SmokeMRC Helmet Replacement Face Shields are compatible with MRC Stage 1 Helmets. Offered in several colors including clear, light smoke, dark smoke, amber, and photochromatic transition. The personalization options are numerous. The photochromatic transition variant automatically darkens under sunlight exposure, eliminating the need to carry and exchange between a clear and dark shield, showing them to be direct replacements for MRC Stage 1 shields.