Trying to put single action firing animation on revolver

[1337wafflezz]

Ok.

This is my second thread so I don't know if this is the totally correct forum to post but...i'll give it a shot

So I had this really cool idea of modifying the custom Remington revolver you get at the end of the first New Vegas Bounties. I got the first part right...change the number of projectiles and add a little bit more spread to make it like a tight shotgun blast(think Charon's shotgun). However the problem comes with the next one. I wanted to make the revolver single action much like the normal .357 magnum. I found the attack animation of the normal 357 and changed the Remington 1858 model to use that one. But...There is no sound when the hammer is cocked and the hammer of the firearm remains constant. It doesn't move in any way. A relatively minor problem but I still thinks it breaks the immersion of such a great gun.

First off, how hard would this be to correct? What programs would I need to make the model have an interactive firing hammer on it?
If it's really advanced and time consuming is there anyone who would be interested in doing a mod of this?(giving credit to original author for the model of course) I think it's a cool idea