I recently looked over this document, a Technical Info Report from July 1968. It presents a couple of single shot 40mm grenade launchers, some of several in the GLAD program. I carried an M203 in my first campaign and it was the commonly seen underbarrel lug standard to the M16 & incompatible with the grenade launcher if it is to be serviceable. Apparently it could be mounted with left or right swivel options but that's it. I had never seen any example of the overbarrel lug before a few days ago, has anyone else seen one in actual Vietnam-era use? (There are a couple of modern aftermarket products out there, I don't mean those).
Interesting that there is no mention of the XM-148 in this 1968 document.
Interesting that there is no mention of the XM-148 in this 1968 document.
