Roy I purchased my mag from Havlin Sales and went to the site and it says the mag is for the 42,43,44b and 44us and comes with the short adapter.
Thanks to bob for clearing up my oversight. I can however load one LR round into the mag with the pin installed.
Yes, Havlin has said they have a mag for my rifle...I am sure it is the one you have.
At this juncture, I am still interested in what the original magazine was like.