Old Taurus' have a hammer block designed like the S&W hammer block. Taurus revolvers made in the last decade or so do not have a hammer block, but do have the transfer bar.
I'm pretty sure Ruger's transfer bars won't work in a Taurus either.
You can see the S&W hammer block on step 16 here. http://www.buildanark.net/index.php?pages/Smith%20&%20Wesson%20J%20Frame%20Spring%20Upgrade.html
I'm pretty sure Ruger's transfer bars won't work in a Taurus either.
You can see the S&W hammer block on step 16 here. http://www.buildanark.net/index.php?pages/Smith%20&%20Wesson%20J%20Frame%20Spring%20Upgrade.html