Hardware
**For the short version nothing else is needed, you just hold it onto the top of the mag
A small pin, I used a sewing needle cut down.
One small spring about 4mm diameter.
Printing
Print on the edge as shown in the photos.
No support needed.
Assembly
**For the short version nothing else is needed, you just hold it onto the top of the mag
Put one of the springs onto the catch and then push it into place, from there push the pin through.
Notes
I have not done too much testing but from what I have done it seems to work fairly well.
If anything breaks let me know and I will try and make it stronger.
If you do fully fill up your mags I would recommend taking a couple of BBs out so that there is less wear on the nozzle.
I have tested the with the short version and it seems to work for GM PMAGs but its not quite as smooth as for normal MWS mags.