magpul - MBUS Pro LR

All steel construction-Case hardened & finished with Melonite™ for extreme resistance to wear & corrosion-Mounts on any MIL-STD-1913 Picatinny/STANAG 4694 rail-Windage adjustable with low-profile knob – no tools required-Elevation adjustment wheel for 200-600 meter distances in 50 meter increments*-Positive detents in both the up & down positions-Standard AR sight height when deployedElevation Adjustment:0.5 MOA (0.566"/100m) per click with a 14.5" sight radius0.4 MOA (0.410"/100m) per click with a 20" sight radius*Note: The 200-600 m elevation adjustment wheel is a hybrid calibration taking into consideration CALIBERS (5.56 and 7.62 NATO), CARTRIDGES (M855, M193, Mk262, TSX 55gr, M80, M118LR), BULLET WEIGHTS (55-77gr for 5.56 and 147-175gr for 7.62), BARREL LENGTHS (14.5-20"), SIGHT RADIUS (14.5-20" for 5.56 and 18-20" for 7.62), POINT OF IMPACT DISCREPANCY (+2.5" to -5.0"), and assuming standard temperature and pressure.