WWII US M15 Sight, Grenade Launcher Attachment

WWII US M15 Sight, Grenade Launcher attachment. This devise was mounted to the wood work of the left side of rifle and used in conjuction with launcher attachment for firing grenades. It could be fitted to the M1903, 1903A1, M1 Garand rifles and the M1 Carbine.  The launcher comes with a 1944 dated carry case and is in good working order.