Following up
When I searched cmmg for 60/90 ambi safety, I ordered the first one on list.
It turned out to be a 90 degree only so I tried to return to purchase the 60/90 switch.
Several back and forth emails where they kept saying that is what I ordered while I argued it was the first one that popped up on my 60/90 ambi search on their site and showed them the screenshot of that page.
Today they tell me I can send back at my cost and they deduct a 15% "Restocking fee".
Told them to piss off.
I have no intention of using cmmg in the future, for a return or otherwise.
I purchased the rest of my parts for rebuilds with Diamond Back, Brownell's and Optics Planet and told them so.
Beware

Safety now on my Classified : Accessories and other tools post. Save the $11.95 shipping !