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Mrlandmd

1928 Thompson

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My 1928 Thompson occasionally fires one or two rounds after I let off the trigger on full auto. I assume a spring or so is getting weak in my trigger group. Any help as to which spring I replace or just replace all of them? Thanks, Mgdoc8307

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Check your sear and the sear notches in the bolt. My M1 did the exact same thing until I discovered the sear notch was worn and not locking up when I let off it. 

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Thanks! Will do!

 

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If the sear and sear lever appear okay, replace the sear and sear lever springs.  If that doesn't solve the problem replace the disconnector spring.

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Thanks for the help! Michael

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also DONT BABY THE TRIGGER ! get on it and off it firmly.  it will stop any useless wear or breakage. not so much these days but almost all the thompsons we got in had bad sear and disconnect springs.


I only accept postal money orders. contact me DIRECTLY before sending any funds                                           email  myoldiron@outlook.com        

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