MNCop Posted August 7, 2017 Report Share Posted August 7, 2017 I have been seeing different versions of what you have to do to replace the Kahr Arms mag catch with a USGI catch. Some say a total take down of the lower is needed but some say you can just remove the mag catch and carefully unwind the spring. What approach would be best? I want to use USGI mags. Thanks John C. Link to comment Share on other sites More sharing options...
Adg105200 Posted August 7, 2017 Report Share Posted August 7, 2017 I would think that you should be able to just push the pivot plate through just enough to clear the stop nub above the magazine catch. Then you should be able to turn the mag catch and pull it carefully out. Andrew Link to comment Share on other sites More sharing options...
06AngusSG Posted August 7, 2017 Report Share Posted August 7, 2017 Took some searching when I did mine but there is a post on here somewhere, with photos, showing how to remove it. No full disassembly required. Link to comment Share on other sites More sharing options...
TennesseeTimmy Posted August 8, 2017 Report Share Posted August 8, 2017 I may be misreading or misunderstanding here. But that never seems to stop me anymore. If I'm not mistaken, just swapping in a GI catch alone will not allow you to use GI mags. The "nub" on the catch still has to be modified to make up for the 0.1" difference between the heights of the Kahr receiver and a "real" Thompson receiver. Good luck with your project. Timmy Link to comment Share on other sites More sharing options...
06AngusSG Posted August 8, 2017 Report Share Posted August 8, 2017 I may be misreading or misunderstanding here. But that never seems to stop me anymore.If I'm not mistaken, just swapping in a GI catch alone will not allow you to use GI mags. The "nub" on the catch still has to be modified to make up for the 0.1" difference between the heights of the Kahr receiver and a "real" Thompson receiver.Good luck with your project.Timmy100% Correct Link to comment Share on other sites More sharing options...
MNCop Posted August 23, 2017 Author Report Share Posted August 23, 2017 I found that last post to be true. Some other sites said the replacement with a GI catch would allow use of GI mags but this did not work. Link to comment Share on other sites More sharing options...
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