Anyone used the Co2 box mag for VFC M249?

I don’t know what the M249 needs regarding the size of capsules.
But I found a few different sizes available from food supplies wholesalers
I used 88gr Co2 capsules to fill my APS CAM870 shells
 
I don’t know what the M249 needs regarding the size of capsules.
But I found a few different sizes available from food supplies wholesalers
I used 88gr Co2 capsules to fill my APS CAM870 shells
The ones from food suppliers and homebrew kits have a different thread pattern that’s the problem you can find hundreds in seconds on Google but not with the right thread pattern unless you go for the 88 g ones, then modify the box
 
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