U. S. Army
Ladder Sight for 37/40mm Launchers Mil Surp M203
This is the ladder sight that was used with the M203 launcher, brought back for you to use with your very own Tac-D 37mm launcher. Remember that it needs to be calibrated with the ammo you are using.
The link below will bring you to a pdf that explains how it is used. A great way of utilizing a piece of history.