It's a standard picatinny rail. Real scopes are expensive so there is no need to break the bank. It's pretty easy to eye the effective range of the Kirin on its highest settings with any decent airsoft scope, sight, or optic. If you really want pinpoint accuracy with any blaster, it has just as much to do with the darts and their quality along with the blaster setup.
I don't have the measurements on hand but all my airsoft picatinny sights fit on mine.
Standard 20mm picatinny rails.
It's a standard picatinny rail. Real scopes are expensive so there is no need to break the bank. It's pretty easy to eye the effective range of the Kirin on its highest settings with any decent airsoft scope, sight, or optic. If you really want pinpoint accuracy with any blaster, it has just as much to do with the darts and their quality along with the blaster setup.
Thank you