Optic Hardware has become a hot topic with all the different weapon manufactures and now with more and more optics coming into the industry. We offer a pair of screws, Loctite, and an allen key (where applicable).
This problem arose from the use of the Holoson 507k being used in conjunction with our Arex Defense Delta Gen 2 OEM plate. The 90 degree countersink angle was too large, therefore we had to use Torx headed screws with a 50 degree counter sink.
Other manufactures these fit to our knowledge are Glock, Arex, and Canik.
There is a lot of questions pertaining to optic hardware, so feel free to contact us regarding your questions.