Well I have a SX2 and I dont really know what is wrong with it. The hammer is weak or something. It hits shell and leaves indention in shell and does not fire it. Does anyone know where i can buy a new action spring and firing pin for this gun?

Try midway usa. First thing I'd do is clean/polish parts. Grime and roughness causes many many problems.

ive cleaned it and cleaned every little individual piece atleast 5 times. Hammer is getting weak on it.

Take it to a gunsmith, to check out.
It could be either a weak spring, or damanged fireing pin.
JMHO

Winchester part number B111620001 http://media.winchesterguns.com/pdf/..._pricelist.pdf

Interchangeable with SX3

https://www.brownells.com/.aspx/pid=...uper_X_Model_2

Sold there as part #48 for $3.74

Firing pin is part #30 at brownells for $25.

thanks so much. i have been looking for a place to buy some new parts for it. Thanks so much!