imageaudio Posted October 15, 2019 Report Share Posted October 15, 2019 I recently purchased 2 Thompson Trigger Springs from different vendors. Guessing either one is compressed or the other is stretched. Both are 6 coils. Question, does it matter? Would I want to stretch the compressed one prior to installing or is this a mute point? Link to comment Share on other sites More sharing options...
bob241 Posted October 15, 2019 Report Share Posted October 15, 2019 According to the thompson print. the free length should be .82 +.01 inches or .820 thousand Link to comment Share on other sites More sharing options...
reconbob Posted October 15, 2019 Report Share Posted October 15, 2019 I would go with the longer spring. Bob Link to comment Share on other sites More sharing options...
imageaudio Posted October 16, 2019 Author Report Share Posted October 16, 2019 Yes, found the schematic on NFA toys. Thanks for those pointers. The longer spring is the one within specifications for future readers of this post. As bob241 mentioned above, .82 and 6 1/2 coils. Wondering how the short one become so compressed? Perhaps a used spring? In the high resolution photo I took, it does not show any wear on the ends of the spring, nothing shiny and nothing flattened or even scratched. Just another one of the great mysteries of the world I suppose like the sock that always disappears in the washing machine. Trigger Springs.pdf Link to comment Share on other sites More sharing options...
giantpanda4 Posted October 16, 2019 Report Share Posted October 16, 2019 It might have been heated - think Dewat of Demill - at one time. In another gun, of course. Link to comment Share on other sites More sharing options...
laurencen Posted October 17, 2019 Report Share Posted October 17, 2019 could be someone trying to reduce trigger pull force? Link to comment Share on other sites More sharing options...
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