This kit comes with a mainspring, trigger spring, pawl spring, latch spring, hammer plunger spring, firing pin spring.
Springs fit in Ruger Wrangler
While this kit is easily installed, it is not drop-in, it requires fitting by a competent Gunsmith.
Tip: A special screwdriver is needed, to get the pig-nose screw of the firing pinout. The diameter of the pins is 1.2mm, the medium distance of the pins is 5mm. A flat screwdriver bit can be modified to fit.