These are the guys who make the MSR reticle.
There are a number of different direct European outlets you can buy direct from. This is one. You can buy with confidence, and in years past, I have. But, with the Dollar going down vs. Euro, I have not found much reason to. You can usually get as good a price with dealers here. Not a sales plug, but I am a dealer for a number of brands, and would happily quote you on NF, S&B, Minox, Steiner, Hensoldt, Kahles, Leupold and Aimpoint.
Also, shipping costs tend to be high, and you will pay US Customs duty if importing to the USA. The amount can vary based upon country of origin and whether the Agent is paying attention. I have seen $20 and I have seen 15% of sales price.