So, here is the conclusion. It has been 5 months since I have been talking to AliExpress seller (Snake Tactical Sight Store) and trying to prove my point that the item I bought was a junk (and somewhat even dangerous). No success. They are not willing to take responsibility for the product they are selling. They were playing fool (like they do not understand English). Unfortunately, AliExpress gives me zero rights as a consumer and protects it's sellers only. It seems like hteir disputing system is set up that way. I am done with Ali - no business with this company!!! However, I have to admit - AliExpress won. They (Snake Tactical Sight Store) took my money. I am upset but the seller is probably laughing now and bragging to his/her friends how he/she screwed another "stupid" American. SAD!!!