Midwest Industries Lower 1/3 QD Mount Fits Trijicon MRO Go to amazon.com Related posts Top recommendation for trijicon mro mount FeatureHard coat anodized 6061 aluminum for a lifetime of serviceWeighs only 2.2 ozExtremely smooth in operation with a multi-facetted adjustment nut to get the exact tension required by the operator DescriptionMI Trijicon MRO Lower 1/3 QD Mount