Unfortunately we don't make a killflash/ARD for that scope. We'd recommend checking out Tenebraex. They make threaded ones and some that are built into flip-caps. If you can find a threaded one, the thread pitch on your scope is M55.8x0.75-6H and if you go with the flip-cap version, the outside diameter of your objective is 2.27".
Tenebraex ARD's - https://armament.com/tenebraex/
Let us know if you have any questions along the way. Happy to help.