Mounting StrikeFire on a 1/2" riser: what ring height to co-witness?

Hi… I use a 1/2" riser with my Viper, and I do like ther set up so far. I am now planning to get a StrikeFire just for the fun to shoot/plink with different scopes.

With the riser – which I intend to keep, I suspect that the low ring version of StrikeFire will be too low, and the X-High ring version will be too high… Are there other alternative options (as for rings and height) which will allow me to co-witness the MBUS with the StrikeFire?

I do not have much budget to even cry once :slight_smile: , so the top notch ADM, LaRue, ARMS, etc.will not fit my wallet, kindly pls suggest other more economical options, if any :wink:

Thanks in advance…

Meantime, here’s a picture of the Viper on riser: [b]Wagon’s First AR[/b]