Going back to the first post, I'd be grateful for clarification of the statement that the Belgians used the Mills No.5 as a rifle grenade - whether in a Lebel or a Mauser.
Morum & Co. had an initial contract (No.2878, date 1.6.16, placed by Trench Warfare Dept) for 100,000 plugs and 100,000 rods, and these formed part of an overall order for 200,000 plugs and rods to be shipped to the British Army in France - for converting No.5 Mills into rifle launched grenades. The No.23 MkI grenade, hand and rifle, was slowly being produced but numbers needed to be supplemented by conversion of some No.5.
In May 1916 three patterns of rifle cup were ordered for trial - for the short rifle, the long rifle and the Ross. From a TW Supplies Dept report, "Instructions have been received to prepare 1,000,000 Mills' grenades with attachment for firing from a rifle. This demand involves the provision of special base plugs, 5-inch rods, and blank cartridges; also 35,000 cups for attachment to the rifle of three different patterns." In late June 1916 a TWSD report update has, "The demand for cups for the long and Ross rifles has been cancelled, so that the only cup now required is for the short rifle."
The point here (and somewhat laboured it may be) is that different launcher cup designs were required for the different rifles, and they took design and trials time and effort to produce. Hence I'd be interested to learn of developments for foreign rifles, because it is an area of which I am completely ignorant.
The statement of foreign use in a foreign rifle was made. It's a little odd for discussion of that point to be off topic.
Tom.
