Trijicon Short Quick Release Mount for 1.5x16, 1.5x24, 2x20, 3x24 and 3x30 ACOG Models Short Quick Release Mount for 1.5x16, 1.5x24, 2x20, 3x24 and 3x30 ACOG Models  Fits 1913 Rails Precision CNC machined from a block of 6061 T6 aluminum Finished in 3 mil-spec anodized black for a rock hard finish Height of mount surface to optical axis: 1.370 in. Weight: 2.7 oz.