Sight blade height?

[Masterbuck54]

Cleaning up a gun for a buddy of mine and noticed the rear sight blade will need replaced since it appears it was dropped and is broken.
What height should I order for a 28-2 4"?
Thanks in advance for all info.

Masterbuck54

 

[zonker5]

I'd measure the old one and order one to match.

 

[wetdog]

From the S&W shop manual .136

 

[Masterbuck54]

Thanks

Thanks for the info.
Once the gun gets done soaking in Acetone/ATF and back together I'll post some before & after photos.

Masterbuck54