What cartridges for Mgc M76

Hello!
I recently after a long wait gotten my hands on an mgc m76 from a very kind friend.
It came with no cartridges however but I knew I had a couple of old 9mm ones at home.
These however do not seem to fit/work.

And here is where you might be able to help me!

Here is the modelgun and the cartridge. Dont really know much the cartridge about it except thats its one of those old open toped ones and on it back it reads LUGER ( Wouldnt be suprised if it said Ruger though cant really tell   ) and I can read a big 3 on the fake primer. I will come back to the cartride shortly. Now.

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Here is the ejection port open showing the ¨chamber¨and we can see the striking pin .
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Here is the same picture but this time with the cartridge. It fits but it wont go all the way in. Here comes the funny part.
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Even if we try to fire the modelgun it wont move any further in.

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However, IF we remove the barrel. The firing pin gets some space so it can move,






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And here is the funny part about these cartridges that they fit and eject perfectly. As long as the barrel is off so the firing pin can move

However at the same time that means that the striking pin wont ignite the caps inside the cartridges because its  gets to loose so it doesnt have force enough to ignit the caps.


I am pretty damn sure that the problem here is that I am using the wrong cartridges and if that is the case can someone please tell me which ones to get? And of couse which ones that work the best? Or otherwise if these cartridges actually do work. What can I do to make the modelgun work properly?


Thanks!

I don't know that model, but the cartridges are familiar. They look like the open cartridges that came with Tokyo Marui model kits. They were stamped on the bottom (as far as I can remember)

I had a couple of their Colt 45's (long gone) and a couple of S&W revolvers.

Those rounds you have are definitely marui rounds and will not work with the M76. MGC did an open round first and i think it was the long rather than short round ones about 22mm for the short the other 24mm i think and they did a CP round. pics of the CP and open your det will tell you which round you need.

CP round box



Top of CP round



CP round



CP round pston



Open round long



open round top



open round left CP right

Wonderful! Thank you!

These are good news! then I know what I should be looking for. Thank you!

Anybody maybe know where I could find some?

They come in 2 different style boxes. These are the ones I have for mine, which doesn’t have a firing pin.

I see wonderful! Thank you.

I actually have a friend going over to Japan in a couple of days for about a month. Tokyo and Osaka. He can probably pick some up for me

Now I know for certain there are modelgun shops in Japan and I can probably find some just by googling but I might as well ask. Do anyone have any recommendations for any stores? I dont mind buying used cartridges as well