Mainspring for older K22

[K14]

I have a 1948 K22. I might need a new mainspring for this gun. Will any K-frame mainspring work, or, do I need something special for this old rimfire gun? If I need something special, does anyone have any recommendation for a parts house to get this?
Numrich, Bobs, Traders Den?
Thanks in advance.

 

[C.R.Sam]

www.gunpartscorp.com (Numrich)
Mfgr # 50470000
Item # 322080

Sam

 

[Standing Wolf]

Any time I need springs, I call Wolff. I've never been disappointed.

 

[James K]

I have, many times.

Jim