I'm looking ahead to getting a better red dot sight if the factory-installed MP-100 on my new M&P 15-22 doesn't pan out. I'm seriously considering the Sig Romeo5, but there are options for riser heights and I'm not sure which height would be best for this rifle. The least expensive Romeo5 has a fixed 1.41" riser. Would that work OK with the 15-22? Is it even worth trying a low profile riser (the second least expensive Romeo5)?