not sure go on their site and searchWhat brand of mount?
I have the CIL 830 and holes lined up perfectlyI ordered a side mount from B-Square that was excellent once it arrived only problem is had to get 3 new holes drilled as it't made to fit 340s with serial numbers and mine didn't have them. But the rifle shoots perfect and my last 3 deer have been with it instead of a modern fancy rifle like before.