Bobro Engineering Compact ACOG Low Mount Black. Height of mount is also to Trijicon factory dimensions. We were supplied critical dimensions directly from Trijicon so it is completely within the manufacturers specifications and will work with the ACOG properly. It is constructed from Aluminum alloy 6061-T6 and hard anodized to Mil-Spec.There are 2 available heights the standard Trijicon height ( Co-Witness) and a higher (lower 1/3). These mounts are for the single screw Compact ACOG such as the TA-33 etc. Included Accessories: Instruction and Toolkit Specifications for Bobro Engineering Compact ACOG Scope Mount: Manufacturer: Bobro Engineering Height: 2.5 in Color: Black Length: 4.75 in Width: 2.5 in Condition: New Package Contents: Bobro Engineering Compact ACOG Scope Mount Bobro Engineering B08-001-002: Compact ACOG Low Mount Black