I am not connected with Rhineland Arms in any way except for ordering two of these kits.
Late Sept/early Oct I contacted Rhineland for info to convert a Lee Enfield that I have. They told me new kits with up-graded mag adapter would soon be available. I've waited 6 months for these to get finished. I'm very excited about getting these kits. And now that I got mine ordered I thought I'd let other's know they are available.
http://www.troupsystems.com/product/enfield-45-acp-kit/
The Lee Enfield conversion is easier to convert and get reliable feeding and extraction/ejection than the Mauser conversions. They also should be a great Cast Boolit gun too!
Photo courtesy of Rhineland Arms.