Can appear as horizontal bars or rotated to show a fine crosshair
Uses only one side of the foresight
Supplied with plastic tool to rotate the bars
M.18 or M.22
A: adjustable from 2.4 - 4.4mm
B: adjustable from 4.0 - 6.0mm
C: adjustable from 2.9 - 4.9mm
D: adjustable from 5.0 to 7.5mm (M.22 only)