Sure, but do you require live ammo or dummy? If that thing actually works you will be in for a world of hurt from the ATF without the correct permits & tax stamp etc.
303 ammo isn’t cheap like regular US .30cal stuff, you could pay up to $1/round.. & thats for both live & dummy ammo.

Edit:
Just reread your post & realised you need the can, not the ammo.. n/m

we are working on semiauto modifications similar to what has been done with the 1919A4. just trying to get all the odds and ends found before this happens. the other two guys are working on the FN30 at the moment. the ANM2 is next on the list. when i got the parts kit it came with a ton of original british manuals the previous owner found somewhere. we are using the machinist prints to redesign it to fire semi from a closed bolt.. would like to find a can or at least drawings of it so i can make a new one. good close up photos would even be a great help..

robert