A total of 1 review of this product on Reddit.
28th Mar 2019
Here it is cheaper on Amazon.
I don’t know how to tell if something is knock off or not, but there you go, save you $20-30. The modifiers on the bottom row are what I look at to see if a set will fit the AP2. If all the modifiers are 1.25 unit, then I assume it will work.