Brownells RSA-108 19lb Pro-Spring Kit For Old Model & Old Army Ruger Single Action
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An excellent base from which to build a beautiful, smooth and reliably
functioning gun. Includes a redesigned trigger spring and a reduced
power hammer spring to give controlled trigger pull. Also includes extra
power, base pin latch spring. Factory hammer spring is 23 lb. Kit
contains 19 lb. hammer spring, 25% reduced power trigger spring, and
increased power, base pin latch spring (use an old model only).