Trijicon TA-60 Compact ACOG M16 Base Flattop Mount Adapter fits the 1.5x16S (M16 base), 1.5x24, 2x20, 3x24, and 3x30 ACOG models. This thumbscrew flattop mount clamps onto 1913 Picatinny rails.
Height of Mount Surface to Optical Axis:
1.5x16S (w/ M16 base) = 1.660 in.
1.5x24 = 1.660 in.
2x20 = 1.660 in.
3x24 = 1.660 in.
3x30 = 1.660 in.