Pup,

I almost alway use Burris "zee" rings, but in this case I went with the Browning Bases/Rings; built for the X-Bolt (4 screws = X = the name for the model ).

I use low rings, because I'm only 5'6" and need a low mount to get a good cheek weld.

If you want to use flip-up lense covers, you would need to use medium height rings (maybe even high, depending on which rings you decide on).