In mounting two night visions of the stemma type. Can treat it as a night vision of the both eyes type. It is a special item. This main unit is to go through mounts such as L4G24. Possess a helmet and is possible. It becomes made of 6061-T6 aluminum and is prepared by CNC processing. Most of the cost you are noticing actually comes from the expense of high quality packing, advanced audit testing, and rigorous quality control. Custom job or product will require additional 2 to 4 days to prepare. If you find the product is defective which is rarely happen, you can return the defective ...