I had a Millett on my carbine for...a little while. Expensive CZ 'high' rings to clear the bolt.
It was alright I guess. As I remember, it brought my cheek weld too high off the stock for my liking. Went back to the irons which work fine. The Millett now resides on my CZ Kadet, a much happier home.
Wish they made a fiber optic front sight for the carbine, that would be very nice!