A KGP-141 is a GP100. If I recall correctly, K is Ruger-speak for stainless steel. The last two digits, 41, refer to specific things like barrel length and perhaps the type of sights. I am no Ruger expert, but just happen to remember that a KGP-141 is the most common GP100 configuration, stainless, with a 4" barrel and adjustable sights.Very nice looking revolver. I'm not familiar with that model. Tell us more.
Duke