I looked around and there are quite a few models, which one are you using?I use the Mc Fadden when feeding the mags for my M11 with the Lage 22 upper. It's a fantastic unit and has different heads for different magazines. You can get it thru Amazon I believe.
So I ordered me one of those for my 10/22 only to discover that there IS an adapter that works with aftermarket mags but not factory mags. Why would it work with those but not the originals and why would there not be an adapter for factory mags? This is a very common model after all.I use the "lightning loader" I think it's called.
The P17?that little 22 KelTec
I have the Keltec sorted I did find a loader.The P17?
If you have access to a 3D printer it looks like there is a loader available.
Also, magazine extensions:
Printables
www.printables.comPrintables
www.printables.com
If you don't have access to a 3D printer, let me know and I can print you a loader and send it to you.