MGC 1911 Government Laser Target Version Cycling?

Ok so I finally got some old timey mgc 45 cases for my mgc 1911 government laser system gun and all the cases came with were the plunger and the case, the cart i tested fired but did not cycle. These carts dont unscrew and I'm not sure how to use these or if i even loaded right? pic below of what i have

https://i.servimg.com/u/f62/19/87/34/43/15224210.jpg

I have no idea how this works,i have a similar round for my marushin CZ75 and still cannot figure it out,if i do i will let you know.

Here's my understanding........the old, one-piece rounds like this were "BLK" rounds.  Used for/with paper caps.  No internals.
These may fit your model and go bang, but they are most likely not the intended cart.  Your setup is probably designed to be used with the later "CP-BLK" rounds, which used a yellow plastic piston cup and a brass striker piece.  
The latest rounds are "CP-HW-BLK" or something like that, and they use a brass inner piston and a rubber o-ring to create the blowback seal.