There is no one best place. You have to search among all US and European accessories vendors and sometimes put yourself on notification lists.Been thinking about one of the shadow 2 optics ready guns but have heard that getting the plates for the optic is hard. Is this still true and where is the best place to find one. Thinking about a Holosun for it
I have never had a problem finding optic plates, but I always use internet searches and don't exlcude buying from Europe like many seem to do.