If you are using a front rail like NEA or BS, you might want to look into the ARMS quick detach mount:http://armsmounts.com/shop/mounts/a-r-m-s-31-aimpoint-micro-mount/
It is made to fit the 'universal' Micro system, and it is LOW. e.g. - I have the MD-25 micro, and while it WILL cowitness on the VZ 58, it does so ONLY on the "U" setting of the rear sight. With the ARMS I can actually get a slight cowitness on the 100M setting. SO this mount is likely the lowest available and I think having the cowitness feature is actually an advantage - even the most durable optic COULD crack.