Hossbreed45 Posted February 16, 2019 Report Share Posted February 16, 2019 Just how much modification does it take to install an M1/M1A1 SMG trigger frame to a current production Kahr/AOC TM1 semi-auto receiver? Is it legal to do so without ATF approval? What is the going rate for an M1/M1A1 SMG complete trigger frame? Thanks in advance... Link to comment Share on other sites More sharing options...
lamellarllc Posted February 16, 2019 Report Share Posted February 16, 2019 There will be modifications to the lower ( milling) also you can use the FA selector as a bolt hold open which does require some mods as well. I had Dan on the page build my custom Thompson using a full auto 1928 lower with a full height 80% reciever so it is possible but mods are needed to fit a current semi-auto Khar upper Link to comment Share on other sites More sharing options...
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