having issues refilling WE 1911 mag

[springs]

hi all

i have a WE 1911 that i got with 2 mags. I've brought another mag which i can't seem to fill. It says on the box M.E.U which i believe is another type of 1911.

On the mag itself where the gas fill point is it seems to have a cover that i can't seem to remove. any ideas?

mag looks like this:

 

[Monty]

You can remove the baseplate by pushing the two pins out at the bottom.

 

[onion]

You need a adaptor for the gas can for meu mags , I find that it's much Easyer to use the regular 1911 mags, adapter fits right down , but isn't a brilliant seal