WW2 U.S. rifle grenade aiming device No.2

This is a very nice complete item.
It is a WW2 dated aiming device for the Garand rifle, so that rifle grenades could be fired.
Everything is in mint unused condition.
The pouch is nicely dated 1944 and of course in it belongs the device.
With it is also a water resistant instruction leaflet.
Officially called “Rifle grenade sight, M15”

Mentioned in “GI collector’s guide Volume 1” page 95

Markings: as mentioned in previous description
Condition: mint / metal parts still in original grease paper