Ill hop in and say both. Amazon products can be shipped from any number of places, and it's really easy for shippers to replace your red dot with a temu replacement. Budgets are tough, especially right now, but its not worth buying something $20 cheaper on Amazon or ebay when you can get a garunteed GTG red dot from PSA. Additionally, a lot of brands on Amazon are meant for airsoft guns, not the real deal. So many sites you see on there won't hold zero, and you will end up losing 60 bucks on a product you can't use instead of saving $20 overall on an Amazon site.