Ruger has shown a new GP100, chambered in 22 Long Rifle, 6" half lug barrel, 10 shot cylinder, on their TV show "Ruger Inside & Out". It appears to use the standard GP100 grip(the prototype looks to have the COMPACT grip installed)and the standard replaceable front sight. I have been emailing Ruger for several years about making this exact revolver, so I am very excited it is coming. I have a S&W 617 in a 4" and have wanted a 6", but havent been able to find one, so I will be buying the Ruger instead. Im very happy that Ruger seems to be in touch with what the shooting public wants...