This is an unbranded cheaper version of the Eotech EXPS 558, this should be only used for airsoft or cosplay purposes, and shall never be used on a real firearm, as it's not designed to be.
Shipping typically takes 15-20 days, as the item is sent via overseas air freight. In some cases, it may arrive in about 15 days; however, under normal circumstances, delivery should not exceed 1 months.
Occasionally, delays may occur due to customs or border security inspections, which usually take approximately 1 week.
If your order does not arrive within 1 months (excluding delays caused by security inspections), I will provide a full 100% refund. But if there were any security checks, etc, refund would no be given.