Source for S&W 5.45 hammer spring?

[Failure2Stop]

I need an extra power hammer spring for my 5.45.
Anybody have a source for the OEM part?
Is the Wolff Extra Power spring an acceptable replacement?

Thanks

[sdacbob]

I believe the Wolff extra power springs will work, I just ordered a 3 pack.

[545Warman]

The heavy hammer spring could make your trigger pull to go up....way up.
It did on my AR, so I changed it out & installed a Jard trigger with the Jard heavy hammer spring.
Now I have an AR that shoots cheep ammo (5.45x39) with a 3 pound trigger pull.

[sdacbob]

Got my Wolff springs Thurs and installed one yesterday. The trigger pull is not too heavy.