Lamp3345

New idea same mage concept as yours or mine but add a half length dart spacer with a magnet on the end and another on the pusher when the Dart gets to the pusher to the auto extens the stock pusher and feds the next set to solve the Meg changing problem keep the dart retainer and when you pull the mag that pulls the extra length dart with it

(Delete) double post

Putting that aside what do you think of the concept now that I thibk you understand what I was saying
Or if anything all youd really need to design is the pusher plug / dart fedder then you could put it in any Stefan mag and make it work with stock pushers

Like take a worker Stefan pemag and add a plug before the dart that gets push by the stock pusher

 
And what I'm talking about is this. Should work in all mag-fed blasters with little/no modification. Fully-double the capacity, no spacers.

Ok that concept would work well Id add some sort of cap or something that might move via gravity to make sure no data fall but what I want is a mag similar but no need to extend the stock push in any mag fed flywheels so in theory I can still use full length darts if I want in the same blaster without problems

It's not a bad design on its own, it's just that it has lots of moving parts, lots of special requirements, and 'just' doubles capacity for it.

If it helps, I can propose the following design, which should work for less trouble and most stock blasters (even springers). Basically, several (or just two) mags in series, sitting against a single, sliding 'top' of the mag, serving as an adapter to the magwell. As the lined-up mag empties, you automatically or manually (I'd go manually) shift the mags, so the next one is in line.

Alternatively, the principle of Khaos magazines can work for stefans.

Like the drum mag thing for that last big vortex blaster right