mod 1955

[mannparks]

i have a s&w model 1955 [mfg date1956]

what, if any is the importants of a maine spring with a W shape?
charles

[gwp]

Is it a replacement "Power Rib" mainspring?

Like this:

http://www.brownells.com/handgun-par...prod26251.aspx

Or this

http://www.brownells.com/handgun-par...prod26252.aspx

[mannparks]

not even close ,when i get my camera back i'll take a pic.

this thing is huge,like a w in shape.

[randy langford]

Does it look like this if so Smith and Wesson tried these in the mid 1950's but they did not last long the also tried a U shaped one as well.

[mannparks]

bingo, that what i got. thanks randy.
i seams like alot going on for what the new springs are today.