I am questioning using a Sig Romeo 5 (in normal/high mount) with standard magpul mbus. Will this set-up work? Can it be zeroed? I see there is a drastic difference in height from the stock irons to the MBUS. I plan on zero of 25 yards (max indoor range length, and max open clear space in my house). Will the Romeo have enough movement to drop that low? Will the mbus have enough movement to drop that low? Looking for real world experience. I am not opposed to buying a low mount, but once I do that I am increasing the overall price of optic and mount, I could look at other options in the same price range.