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Old June 12, 2014, 07:32 AM   #2
wogpotter
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Join Date: September 27, 2004
Posts: 4,811
Doubling is sometimes caused by having the trigger springs reverses with the extractor spring.
The whole mechanism is a balancing act between spring tension & the sliding sear, if you have the similar-looking, but stronger spring installed this frequently causes doubling.
Some springs are color coded green to help prevent this.
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