Thank you Simon.
I actually bought a few FN 303 magazines to design our next gun.
And figured I would have to build something similar. I will either go stamped or machined.
The magazines are really simple and they work. I started a Sten style gun about a year ago and made a stick magazine on the same principle of capturing the First Strike.
I tried a TPX magazine on the T2 pump that was a side loader.
First Strikes don't like to be loaded that way.
Thank you again.
Bill-CCM