Hi k/ what about blond women and blugums...just kidding. I bought some 1st gen magpul flipups for a flat top but later added a scope so I took the rear MBUS off. A few years later I build a PA freedom AR witth a A2 front as a truck gun. I put the MBUS on it and went to the range with my father in law. the sun was 12 high and the glare in the rear MBUS was so bad. what is a reasonable price rear sight, it does not have to be flipup. I kind think the HK style is cool but what works good with a A2 front. I luv u guys no homo.