MATE creates a spot where precision meets portability. The magnesium alloy housing reduces the weight by 50% and improves the precision. MATE supports practical functions, including removable buttons, LRF, and monocular extension. It is the ideal mate for users who want a compact size and great value. 
In the package, the complimentary universal adapter with four inserts is suitable for the outer diameter from 56mm to 65 mm.
If your day scope is out of this range, you need to buy it separately with the internal thread M52*0.75 and an insert of the required diameter depending on the outer diameter of your day scope’s objective lens.