Roy,
The good news is, and something on John and my wishlist was that...............they work and cross match to any H&K pieces as well as the old magazines. As you can see from the images the magazine disassembled. This one part to be re designed and manufactured took a great deal of time to ensure it fitted absolutely correctly and work with previous kits.
So in short you could just buy a magazine from Peter, and he would stand by its reliablility.
Next week I will put a bit of video up.
I fired 50 x ELEY .22 rounds as I had run out of CCI MiniMags, it proved even at low power it through the working parts back well. Fired 50 rounds with only two ejected, that had been struck.
I then removed the Armalon/H&K parts and fired 50 x GGG 7.62 rounds with no stoppages whatsoever on straight pull.
So many people disbelieved me, I decided to show a video next week............wait out!!